Plant Growth and Development MCQ. We covered all the Plant Growth and Development MCQ in this post for free so that you can practice well for the exam.
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MCQ on Plant Growth and Development for NEET Students
Over-ripening of bananas due to excessive O₂ availability is called respiratory climactic. It is associated with
(A) auxin
(B) cytokinin
(C) ethylene
(D) gibberellin
Option c – ethylene
Application of GA on grape stalk leads to
(A) increase in the length of the grape stalk.
(B) early ripening of grape stalk.
(C) shortening the length of the grape stalk.
(D) early abscission of the grape stalk.
Option a – increase in the length of the grape stalk.
Select the INCORRECT statement about ethylene.
(A) It is a simple gaseous PGR.
(B) It is highly effective in fruit ripening.
(C) It helps to extend the shelf life of apples and tomatoes.
(D) It induces flowering in mango.
Option c – It helps to extend the shelf life of apples and tomatoes.
Read the given statements and select the correct option. Statement I: In day-neutral plants, there is no correlation between exposure to light duration and induction of flowering response. Statement II: Short-day plants require exposure to light for a period exceeding a well-defined critical duration for induction of flowering. The correct statement is/are
(A) Statement I
(B) Statement II
(C) Both Statement I and Statement II
(D) Neither Statement I nor Statement II
Option a – Statement I
Which of the following function is NOT controlled by auxin?
(A) Phototropism
(B) Photorespiration
(C) Growth
(D) Apical dominance
Option b – Photorespiration
Plants like maize, spinach, and cotton require light for more than the critical period of in exposure order to flower, thus they are called
(A) long-day plants
(B) short-day plants
(C) day-neutral plants
(D) intermediate plants
Option a – long-day plants
Which of the following hormone should a farmer use to spray on sugarcane crops to increase the length of the sugarcane stem?
(A) Gibberellins
(B) Auxins
(C) Cytokinin
(D) Abscisic acid
Option a – Gibberellins
……. promotes bolting in beet and cabbage.
(A) Ethylene
(B) Gibberellins
(C) Abscisic acid
(D) Cytokinin
Option b – Gibberellins
Which of the following plant growth regulator would you use if you are asked to quickly ripen a fruit?
(A) Kinetin
(B) Ethylene
(C) ABA
(D) IBA
Option b – Ethylene
In plants synthesis of auxins occurs in
(A) conducting tissues
(B) only phloem cells
(C) root and shoot tips
(D) only xylem cells
Option c – root and shoot tips
Which of the following hormone is used to produce seedless tomatoes?
(A) Cytokinin
(B) Ethylene
(C) Auxin
(D) Abscisic acid
Option c – Auxin
Select the INCORRECT statement from the following.
(A) In arithmetic growth, after mitosis, all cells divide.
(B) In geometric growth, after mitosis, both daughter cells retain the ability to divide and continue to do so.
(C) Arithmetic growth is expressed as L=Lo + rt
(D) An embryo initially shows geometric growth in cells but later it passes into arithmetic growth.
Option a – In arithmetic growth, after mitosis, all cells divide.
In a pea plant, root elongation occurs at a constant rate. This is an example of
(A) Exponential growth
(B) Geometric growth
(C) Arithmetic growth
(D) None of the above
Option c – Arithmetic growth
Select the INCORRECT statement about gibberellins.
(A) Spraying juvenile conifers with GAS hastens the maturity period.
(B) Gibberellins cause swelling of the axis of seedlings.
(C) Gibberellins cause an increase in the horizontal axis of a plant.
(D) Gibberellins cause apples to elongate and improve their shape.
Option c – Gibberellins cause an increase in the horizontal axis of a plant.
The formation of interfascicular cambium from fully differentiated parenchyma cells is an example of
(A) Differentiation
(B) Dedifferentiation
(C) Redifferentiation
(D) Determination
Option b – Dedifferentiation
The leaves of juvenile coriander plants are different in shape from those in mature plants, the ability of plants to form different structure responses to phases of growth is called as in
(A) photoperiodism
(B) plasticity
(C) genetic drift
(D) differentiation
Option b – plasticity
Select the INCORRECT pair of plant growth regulators and their function.
(A) Auxins – Help to initiate rooting in stem cuttings
(B) Gibberellins – Decelerate the malting process in the brewing industry
(C) Cytokinins – Help to overcome apical dominance
(D) Ethylene – Enhances the respiration rate during the ripening of the fruits
Option b – Gibberellins – Decelerate the malting process in the brewing industry
Which of the following is NOT the function of auxin?
(A) Controls xylem differentiation
(B) Promotes flowering in pineapples
(C) Enhances the respiratory rate during the ripening of the fruits.
(D) Initiate rooting in stem cuttings
Option c – Enhances the respiratory rate during the ripening of the fruits.
Auxin was isolated by F.W. Went from
(A) rice seedlings
(B) nodal segments of tobacco stems
(C) fungal pathogen Gibberalla fujikuroi
(D) Coleoptiles of oat seedlings
Option d – Coleoptiles of oat seedlings
A farmer wants to eradicate dicotyledonous weeds from his wheat farm. Thus, he should use ……… as weedicide.
(A) GA3
(B) 2,4-D
(C) IAA
(D) ABA
Option b – 2,4-D
……… does NOT cause secondary growth in plants.
(A) Palisade parenchyma
(B) Vascular cambium
(C) Lateral meristem
(D) Cork cambium
Option a – Palisade parenchyma
…….. a gaseous hormone in its natural form.
(A) Cytokinin
(B) Gibberellin
(C) Ethylene
(D) ABA
Option c – Ethylene
……… is/are the intrinsic factor/s controlling plant growth and development.
(A) Water holding capacity of soil
(B) Phytohormones
(C) Light and duration
(D) Nutrition and water
Option b – Phytohormones
……… is a type of germination in which the seed germinates inside the fruit when it is still attached to the plant.
(A) Oviparous
(B) Epigeal
(C) Hypogeal
(D) Viviparous
Option d – Viviparous
Select the INCORRECT statement about the growth of plants.
(A) It is irreversible.
(B) It includes an increase in surface area.
(C) It is accompanied by metabolic processes.
(D) Growth occurs for a definite period before maturity
Option d – Growth occurs for a definite period before maturity
We covered all the plant growth and development mcq above in this post for free so that you can practice well for the exam.
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