Free Plant Growth And Development (Weekly Quiz: 2) NEET Biology Questions & Answers with Detailed Explanation & Full Review

Question-1

What kind of differentiation is seen in plants?

(a) Close

(b) Open

(c) Primary

(d) All of these

Question-2

Which of the following are not essential elements for growth?

(a) Oxygen

(b) Water

(c) Both (a) and (b)

(d) None of these

Question-3

Identify the correct and incorrect statements from the following.

1. 17,500 new cells are produced per hour by a single maize root apical meristem.
2. With the help of length, growth of pollen tube is measured.
3. The growth of the leaf is measured in terms of volume.
4. Cells in a watermelon may increase in size by upto 3,50,000 times.

(a) (i), (ii), (iv) are correct and (iii) is incorrect.

(b) (i), (ii), (iii) are correct and (iv) is incorrect.

(c) (ii), (iii) are correct and (i), (iv) are incorrect.

(d) (i), (iv) are correct and (ii), (iii) are incorrect.

Question-4

Assertion:
Ethylene increases the yield in cucumber.
Reason:
Ethylene promotes female flower in cucumber.

(a) If both the assertion and reason are true but the reason is not a correct explanation of the assertion.

(b) If both the assertion and the reason are true and the reason is a correct explanation of the assertion.

(c) If the assertion is true but the reason is false.

(d) If both the assertion and reason are false.

Question-5

Which one of the following is not a mechanical method for breaking seed dormancy?

(a) Abrasions with sandpaper

(b) Abrasions with knives

(c) Vigorous shaking into the flask

(d) By the action of microbes

Question-6

Ethylene is used to initiate flowering and for synchronizing fruit set in which fruit?

(a) Pineapple

(b) Apple

(c) Banana

(d) All of these

Question-7

What is the phenomenon of dedifferentiation?

(a) Loosing the capacity to divide

(b) Regaining the capacity to divide

(c) Loosing the capacity to divide after regaining

(d) All of these

Question-8

Phototropic curvature is the result of uneven distribution of

(a) phytochrome

(b) gibberellin

(c) cytokinins

(d) auxin

Question-9

Phototropic curvature is the result of uneven distribution of

(a) phytochrome

(b) gibberellin

(c) cytokinins

(d) auxin.

Question-10

Assertion:
The pigment which causes photoperiodic stimulus is called phytochrome.
Reason:
Chemically phytochrome is a starch and lipid.

(a) If both the assertion and reason are true but the reason is not a correct explanation of the assertion.

(b) If both the assertion and the reason are true and the reason is a correct explanation of the assertion.

(c) If the assertion is true but the reason is false.

(d) If both the assertion and reason are false.