Free Sexual Reproduction In Flowering Plants (Weekly Quiz: 2) NEET Biology Questions & Answers with Detailed Explanation & Full Review

Question-1

Identify the structures marked A to F in the given diagram.

(a) A–Pollen tetrad, B–Pollen, C–Generative cell, D–Vegetative cell, E–Asymmetric spindle, F–Nucleus

(b) A–Asymmetric nucleus, B–Nucleus, C–Generative cell, D–Vegetative cell, E–Pollen, F–Pollen tetrad

(c) A–Pollen tetrad, B–Vacuole, C–Nucleus, D–Asymmetric spindle, E–Vegetative cell, F–Generative cell

(d) A–Vacuole, B–Nucleus, C–Pollen tetrad, D–Vegetative cell, E–Asymmetric spindle, F–Generative cell

Question-2

Function of filiform apparatus is to:

(a) Recognize the suitable pollen at stigma

(b) Produce nectar

(c) Stimulate division of generative cell

(d) Guide the entry of pollen tube

Question-3

In chasmogamy pollination takes place in

(a) closed flower

(b) open flower

(c) large flower

(d) geitonogamy flower

Question-4

The arrangement of the nuclei in a normal embryo sac in the dicot plants is

(a) 3 +2 + 3

(b) 3 + 3 + 2

(c) 2 + 3 + 3

(d) 2 + 4 + 2

Question-5

A dioecious flowering plant prevents both

(a) autogamy and geitonogamy

(b) cleistogamy and xenogamy

(c) geitonogamy and xenogamy

(d) autogamy and xenogamy

Question-6

Hypocotyl terminates into

(a) Stem tip

(b) Root tip

(c) Plumule

(d) Both (b) and (c)

Question-7

Coconut water from a tender coconut is

(a) innermost layers of the seed coat

(b) immature embryo

(c) degenerated nucellus

(d) free nuclear endosperm

Question-8

Which type of cell division occurs in the cell of sporogenous tissue to form microspore?

(a) Equational division

(b) Reduction division

(c) Both (a) and (b)

(d) Amitosis

Question-9

Assertion (A) Removal of anthers is first step in artificial hybridisation.
Reason (R) It prevents contamination of anthers.

(a) If both A and R are true, but R is not the correct explanation of A

(b) If both A and R are true and R is correct explanation of A

(c) If A is true, but R is false

(d) If A is false, but R is true

Question-10

Whorl of petals in flower represents

(a) Androecium

(b) Gynoecium

(c) Calyx

(d) Corolla