MCQ on Biological Classification Class 11. We covered all the MCQ on Biological Classification Class 11 in this post for free so that you can practice well for the exam.
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MCQ on Biological Classification Class 11 Students
In which of the following plant double fertilization does NOT occur?
(A) Maize
(B) Fern
(C) Orange
(D) Pea
Option b – Fern
In assisted reproductive technology like IUT which of the following steps is performed? ( MCQ on Biological Classification Class 11 )
(A) Zygote up to 8 blastomere stage is transferred to the uterus.
(B) Embryos with more than 8 blastomeres are transferred into the uterus.
(C) Semen collected from the husband or healthy donor is artificially introduced into the uterus.
(D) Sperm is directly injected into the ovum in the uterus.
Option b – Embryos with more than 8 blastomeres are transferred into the uterus.
In which of the following plant, does fruit is developed from a part other than the ovary?
(A) Apple
(B) Strawberry
(C) Cashew
(D) All of these
Option d – All of these
Ova and sperms are collected and induced to form zygotes under stimulated conditions in the laboratory. Identify which of the following technique employs this step and choose the correct option. i. ZIFT ii. IUT iii. ICSI iv. IUI
(A) i and ii
(B) iii and iv
(C) i, ii and iii
(D) i, ii, iii and iv
Option a – i and ii
Which of the following represents the correct pair of ovular structure and post-fertilization structure? ( MCQ on Biological Classification Class 11 )
(A) Ovule – Seed
(B) Ovary – Fruit
(C) Ovary wall – Pericarp
(D) Nucellus – Endosperm
Option d – Nucellus – Endosperm
The hormone hPL is secreted by ……… during pregnancy.
(A) pituitary
(B) placenta
(C) corpus luteum
(D) primary ovarian follicles
Option b – placenta
Which of the following seeds do not have residual endosperm? ( MCQ on Biological Classification Class 11 )
(A) Wheat
(B) Maize
(C) Castor
(D) Groundnut
Option d – Groundnut
Which of the following parts remain attached to the plant even after fertilization?
(A) Sepals
(B) Pistils
(C) Stamens
(D) Petals
Option b – Pistils
During artificial hybridization, emasculation is not required when ( MCQ on Biological Classification Class 11 )
(A) the flower is bisexual
(B) the flower is in bud condition
(C) female parent bears unisexual flowers
(D) both (A) and (B)
Option c – female parent bears unisexual flowers
……… is an oral contraceptive pill for females.
(A) Nirodh
(B) Saheli
(C) Progestasert
(D) Multiload 375
Option b – Saheli
The cessation of the menstrual cycle is known as ( MCQ on Biological Classification Class 11 )
(A) menarche
(B) menstruation
(C) menopause
(D) ovulation
Option c – menopause
…….. flowers only once in its lifetime.
(A) Periwinkle
(B) Hibiscus
(C) Neelakuranji
(D) Bamboo
Option d – Bamboo
Identify the INCORRECT pair from the following ( MCQ on Biological Classification Class 11 )
(A) Stigma – serves as a landing platform for pollen grains
(B) Style – long and slender stalk of a stamen
(C) Ovary – basal bulged part of the pistil
(D) Anther – the terminal, generally bilobed structure of a stamen
Option b – Style – long and slender stalk of a stamen
The primary oocyte is formed during
(A) fetal life
(B) puberty
(C) adult life
(D) during ovulation
Option a – fetal life
Select the INCORRECT statement with respect to water hyacinth ( MCQ on Biological Classification Class 11 )
(A) It is also known as the terror of Bengal.
(B) It drains oxygen from water causing the death of fish.
(C) It is a native species of weed, commonly found in west Bengal.
(D) It can propagate vegetatively at a phenomenal rate.
Option c – It is a native species of weed, commonly found in west Bengal.
Which of the following is TRUE with respect to pollination in sea grasses?
(A) Although it is an aquatic plant, pollination occurs with the help of insects.
(B) It is a freshwater plant in which pollination occurs with the help of water.
(C) In this plant, female flowers are submerged in water and pollen grains are released inside the water.
(D) Pollen grains are generally rough and non-sticky.
Option c – In this plant, female flowers are submerged in water and pollen grains are released inside the water.
The blastomeres in the blastocyst are arranged in an outer layer called ( MCQ on Biological Classification Class 11 )
(A) trophoblast
(B) chorionic villi
(C) morula
(D) ectoderm
Option a – trophoblast
Read the following statements and select the correct option. Statement I: Chara and Marchantia are dioecious plants. Statement II: Sweet potato produces bisexual flowers.
(A) Statement I is correct, and statement II is incorrect.
(B) Statement I is incorrect, and statement II is correct.
(C) Both statements I and II are correct.
(D) Both statements I and II are incorrect.
Option b – Statement I is incorrect, and statement II is correct.
In which of the following cases geitonogamy can be prevented? ( MCQ on Biological Classification Class 11 )
(A) When in a flower, pollen release and stigma receptivity are not synchronized.
(B) When in a flower, the anther and stigma are placed at different positions so that pollen cannot come in contact with the stigma.
(C) When both male and female flowers are produced on different plants.
(D) When both male and female flowers are present on the same plant.
Option c – When both male and female flowers are produced on different plants.
Read the given statements. i. The majority of plants use abiotic agents for pollination. ii. Wind pollination is more common amongst abiotic pollinations. (iii) Moths are the dominant biotic pollinating agents. (iv) Pollination by water is quite common in flowering plants. The INCORRECT statement/s is/are
(A) i, ii and iv
(B) i, iii and iv
(C) iii and iv
(D) only ii
Option b – i, iii and iv
Sperm heads embedded in the Sertoli cells are released from the seminiferous tubules by the process of ( MCQ on Biological Classification Class 11 )
(A) spermatogenesis
(B) spermiation
(C) spermiogenesis
(D) gametogenesis
Option b – spermiation
Which of the following adaptation is NOT shown by wind-pollinated flowers?
(A) Non-sticky pollen grains.
(B) Colorful flowers which are rich in nectar.
(C) Large and feathery stigma.
(D) Single ovule in each ovary.
Option b – Colorful flowers which are rich in nectar.
Which one of the following is a non-reducing carbohydrate? ( MCQ on Biological Classification Class 11 )
(A) Maltose
(B) Sucrose
(C) Lactose
(D) Ribose 5-phosphate
Option b – Sucrose
The upper surface of the tongue bears numerous projections called
(A) rugae
(B) villi
(C) pulp
(D) papillae
Option d – papillae
Enzyme pepsin acts in ( MCQ on Biological Classification Class 11 )
(A) acidic medium in the pancreas
(B) acidic medium in the stomach
(C) alkaline medium in the intestine
(D) alkaline medium in the mouth
Option b – acidic medium in the stomach
What is the function of Goblet cells?
(A) Production of enzyme
(B) Production of mucous
(C) Production of hormone
(D) Production of HCl
Option b – Production of mucous
Jaundice is a disorder of ( MCQ on Biological Classification Class 11 )
(A) excretory system
(B) skin and eyes
(C) digestive system
(D) circulatory system
Option c – digestive system
People who migrated from the planes to an area adjoining Rohtang Pass about six months back
(A) have more RBCs and their hemoglobin has a lower binding affinity to O2.
(B) are not physically fit to play games like football.
(C) suffer from altitude sickness with symptoms like nausea, fatigue, etc.
(D) have the usual RBC count but their hemoglobin has a very high binding affinity to O₂.
Option a – have more RBCs and their hemoglobin has a lower binding affinity to O2.
The bundle of His is a network of
(A) nerve fibers found throughout the heart.
(B) muscle fibers distributed throughout the heart walls.
(C) muscle fibers found only in the ventricle wall.
(D) nerve fibers distributed in ventricles.
Option c – muscle fibers found only in the ventricle wall.
The Malpighian corpuscle lies in the
(A) medulla
(B) liver
(C) cortex
(D) pelvis
Option c – cortex
Stimulation of a muscle fiber by a motor neuron occurs at
(A) the neuromuscular junction
(B) the transverse tubules
(C) the myofibril
(D) the sarcoplasmic reticulum
Option a – the neuromuscular junction
The pivot joint between the atlas and the axis is a type of
(A) fibrous joint
(B) cartilaginous joint
(C) synovial joint
(D) saddle joint
Option c – synovial joint
During the propagation of a nerve impulse, the action potential results from the movement of
(A) K ions from intracellular fluid to extracellular fluid
(B) Na ions from extracellular fluid to intracellular fluid
(C) K ions from extracellular fluid to extracellular fluid
(D) Na ions from intracellular fluid to extracellular fluid
What external changes are visible after the last moult of a cockroach nymph?
(A) Mandibles become harder
(B) Anal cerci develop
(C) Both forewings and hindwings develop
(D) Labium develops
Option c – Both forewings and hindwings develop
Which one of the following pairs is incorrectly matched?
(A) Glucagon – Beta cells (source)
(B) Somatostatin – Delta cells (source)
(C) Corpus luteum – Relaxin (secretion)
(D) Insulin – diabetes mellitus (disease)
Option a – Glucagon – Beta cells (source)
A health disorder that results from the deficiency of thyroxine in adults and is characterized by (i) a low metabolic rate, (ii) an increase in body weight, and (iii) a tendency to retain water in tissues is
(A) simple goitre
(B) myxoedema
(C) cretinism
(D) hypothyroidism
Option b – myxoedema
Which one of the following is an example of the action of the autonomous nervous system?
(A) Knee-jerk response
(B) Pupillary reflex
(C) Swallowing food
(D) Peristalsis of the intestine
Option d – Peristalsis of the intestine
When a stimulus is applied at a site on the polarized membrane, it causes rapid
(A) influx of Na
(B) efflux of Na
(C) influx of K
(D) efflux of Cl
Option a – influx of Na
A marine cartilaginous fish that can produce electric current is :
(A) Pristis
(B) Torpedo
(C) Trygon
(D) Scoliodon
Option b – Torpedo
Radial symmetry occurs in
(A) Poriferans and Coelenterates
(B) Coelenterates and Ctenophores
(C) Coelenterates and Platyhelminthes
(D) Arthropods and Molluscs
Option b – Coelenterates and Ctenophores
Which of the following characteristics is mainly responsible for the diversification of insects on land?
(A) Bilateral symmetry
(B) Exoskeleton
(C) Eyes
(D) Segmentation
Option b – Exoskeleton
An egg-laying mammal is
(A) Kangaroo
(B) Platypus
(C) Koala
(D) Whale
Option b – Platypus
In which of the following animals post-anal tail is found?
(A) Earthworm
(B) Lower invertebrate
(C) Scorpion
(D) Snake
Option d – Snake
What is common between vegetative reproduction and apomixis?
(A) Both are applicable to only dicot plants
(B) Both bypass the flowering phase
(C) Both occur around the year
(D) Both produce progeny identical to the parent
Option d – Both produce progeny identical to the parent
Which of the following statements is NOT correct?
(A) Pollen germination and pollen tube growth regulated by chemicals are components of pollen interacting with those of the pistil.
(B) Some reptiles have also been reported as pollinators in some plant species.
(C) Pollen grains of many species can germinate on the stigma of a flower, but only one pollen tube of the same species grows into the style.
(D) Insects that consume pollen or nectar without bringing about pollination are called pollen/nectar robbers.
Option c – Pollen grains of many species can germinate on the stigma of a flower, but only one pollen tube of the same species grows into the style.
Two alternative forms of a gene or alleles are located on ………
(A) identical loci of the same chromosome
(B) non-identical loci of the same chromosome
(C) identical loci of homologous chromosomes
(D) non-identical loci of homologous chromosomes
Option c – identical loci of homologous chromosomes
Given below are the steps of the plant breeding program (i iv). Identify the missing step and select the CORRECT option. i. Evaluation and selection of parents. ii. Collection of germplasm. iii. Selection and testing of superior recombinants. iv. Release and commercialization of new varieties.
(A) Cross-pollinating to obtain homozygosity.
(B) Application of fertilizer to obtain disease-free progeny.
(C) Collection and preservation of different progeny.
(D) Cross-hybridization of the selected parents to obtain the new variety of the desired characters.
Option d – Cross-hybridization of the selected parents to obtain the new variety of the desired characters.
A total of 168 pollen grains with 14 chromosomes in each pollen grain are released from a mature microsporangium. Mention the correct ratio of pollen mother cells, generative cells, vegetative cells, and male gametes produced by the microsporangium.
(A) 1 : 1 : 1 : 4
(B) 1 : 2 : 1 : 4
(C) 1 : 4 : 4 : 8
(D) 2 : 1 : 1 : 4
Option c – 1 : 4 : 4 : 8
Different kinds of structures are formed in plants while they follow different pathways in different phases of growth or in response to the environment. What is this ability called?
(A) Hydrophylly
(B) Plasticity
(C) Homophylly
(D) Heterophylly
Option b – Plasticity
Which of the following statements is INCORRECT about the process of sporulation in Amoeba?
(A) During unfavorable conditions, Amoeba forms a three-layered hard covering (cyst) around itself.
(B) The encyst Amoeba divides by multiple fission to produce pseudopodiospores.
(C) The cyst wall of Amoeba bursts to release spores which grow up into many Amoeba.
(D) Sporulation occurs when favorable conditions return.
Option a – During unfavorable conditions, Amoeba forms a three-layered hard covering (cyst) around itself.
A cell at the telophase stage is observed by a student in a plant brought from the field. He tells his teacher that this cell is not like other cells at the telophase stage. There is no formation of the cell plate and thus the cell is containing more chromosomes as compared to other dividing cells. This would result in
(A) Somaclonal variation
(B) Polyteny
(C) Aneuploidy
(D) Polyploidy
Option d – Polyploidy
Ulothrix can be described as an
(A) non-motile colonial alga lacking zoospores.
(B) filamentous alga lacking flagellated reproductive stages.
(C) membranous alga-producing zoospores.
(D) filamentous alga with flagellated reproductive stages.
Option d – filamentous alga with flagellated reproductive stages.
In a longitudinal section of a root, starting from the tip upward, the four zones occur in the following order :
(A) root cap, cell division, cell enlargement, cell maturation
(B) root cap, cell division, cell maturation, cell enlargement
(C) cell division, cell enlargement, cell maturation, root cap
(D) cell division, cell maturation, cell enlargement, root cap
Option a – root cap, cell division, cell enlargement, cell maturation
Keel is characteristic of the flowers of
(A) Gulmohar
(B) Cassia
(C) Calotropis
(D) bean
Option d – bean
Find out the correct statement from the following.
(A) The root system of plants is positively geotropic.
(B) Stilt roots of Rhizophora help the plant to get oxygen for respiration.
(C) The cells found in the region of meristematic activity are thick-walled and without protoplasm.
(D) In most dicotyledonous plants, the radicle elongates to form secondary roots which bear lateral primary roots.
Option a – The root system of plants is positively geotropic
Ground tissue includes
(A) all tissues external to endodermis
(B) all tissues except the epidermis and vascular bundles
(C) epidermis and cortex
(D) all tissues internal to endodermis
Option b – all tissues except the epidermis and vascular bundles
70S type of ribosome shows two units whose sedimentation constants are
(A) 40S and 30S
(B) 50S and 20S
(C) 50S and 30S
(D) 60S and 20S
Option c – 50S and 30S
Spindle fibers unite with which structure of chromosomes?
(A) Chromocentre
(B) Chromomere
(C) Kinetochore
(D) Centriole
Option c – Kinetochore
Protein molecules that form huge pores in the membranes of the plastids, mitochondria, and some bacteria are called
(A) Stomata
(B) Porins
(C) Coherin
(D) Suberins
Option b – Porins
What did Engelmann observe from his prism experiments?
(A) Bacteria could not detect the sites of 0₂ evolution.
(B) Bacteria release excess carbon dioxide in red and blue light.
(C) Bacteria accumulated due to an increase in temperature caused by an increase in oxygen concentration.
(D) Bacteria are accumulated towards red and blue light.
Option d – Bacteria are accumulated towards red and blue light.
In which one of the following processes CO₂ is NOT released?
(A) Aerobic respiration in plants
(B) Aerobic respiration in animals
(C) Alcoholic fermentation
(D) Lactate fermentation
Option d – Lactate fermentation
Regeneration as a method of asexual reproduction is observed in …….. ( Biological Classification MCQ Class 11 )
(A) Ascaris
(B) Planaria
(C) Prawn
(D) Salmonella
Option b – Planaria
Who gave the nomenclature according to which humans are called Homo sapiens?
(A) Darwin
(B) Mendel
(C) Aristotle
(D) Linnaeus
Option d – Linnaeus
Which of the following statement is NOT true for a five-kingdom system of classification?
(A) Unicellular eukaryotes were included in the kingdom Protista.
(B) Fungi were included as a subkingdom of the kingdom Plantae.
(C) All prokaryotes were included in the kingdom Monera.
(D) This system is based on criteria like cell structure, body organization, mode of nutrition, etc.
Option b – Fungi were included as a subkingdom of the kingdom Plantae.
Single-celled eukaryotes are included in :
(A) Protista
(B) Fungi
(C) Archaea
(D) Monera
Option a – Protista
We covered all the MCQ on biological classification class 11 above in this post for free so that you can practice well for the exam.
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