Biology XII Sexual Reproduction practise and sample papers for NEET

Sexual Reproduction in Flowering Plants Mock Test-6

Biology XII Sexual Reproduction



Question No:1

Primary endosperm nucleus is a result of

(A) Fusion of two polar nuclei with male gamete
(B) Fusion of egg cell with male gamete
(C) Both are correct
(D) None of them



Question No:2

Triple fusion is a result of

(A) Fusion of three haploid nuclei
(B) Fusion of two polar nuclei with male gamete
(C) Both are correct
(D) None of them



Question No:3

Double fertilization is
(A) Unique to flowering plant
(B) Results in formation of Zygote and Primary endosperm cell
(C) A process in which triple fusion and syngamy takes place
(D) A process in which triple fusion takes place only.

(A) Only A and B
(B) Only A, Band C
(C) All are correct
(D) Only A



Question No:4

Triple fusion results hi _____ while syngamy results in _____.

(A) Zygote and endosperm
(B) Endosperm and Zygote
(C) Both form of Zygote
(D) Both fern endosperm



Question No:5

Endosperm is a product of _____and embryo is a product of _____.

(A) Triple fusion, syngamy
(B) Syngamy, triple fusion
(C) Syngamy, Syngamy
(D) Triple fusion, Triple fusion



Question No:6

Post-fertilization events do not include
(A) Formation of primary endosperm cell
(B) Maturation of ovules in seed
(C) Formation of ovary into fruit
(D) Formation of embryo inside seed

(A) Only A
(B) Only B
(C) Only C
(D) None of them



Question No:7

Which of the following precedes the other?

(A) Development of embryo before endosperm
(B) Endosperm developing before embryo
(C) Both the development of embryo and endosperm occurs simultaneously
(D) All are correct



Question No:8

Which one of the following is correct for endosperm?

(A) The cells of this tissue are filled with reserve food material
(B) Used for nutrition of developing embryo
(C) PEN undergoes nuclear division followed by cytokinesis
(D) All are correct



Question No:9

Endosperm is earlier _____ and then develops into _____

(A) Cellular, Nuclear
(B) Nuclear, Cellular
(C) Cellular, Cellular
(D) Nuclear, Nuclear



Question No:10

The number of nuclei hi free nuclear endosperm before cellularization is

(A) Fixed
(B) Varies greatly
(C) Fixed in species
(D) None of them



Question No:11

Coconut water is _____ part of endosperm

(A) Cellular
(B) Free nuclear
(C) Cellular as well as nuclear
(D) Neither cellular nor free nuclear



Question No:12

White kernel of coconut is which part of endosperm?

(A) Cellular
(B) Free nuclear
(C) Cellular as well as nuclear
(D) Neither cellular nor free nuclear



Question No:13

Endosperm is completely consumed during seed formation in

(A) Pea, caster and coconut
(B) Castor and coconut
(C) Pea and beans
(D) Groundnut and caster



Question No:14

Endosperm persist in mature seed of

(A) Pea, caster and coconut
(B) Castor and coconut
(C) Pea and beans
(D) Groundnut and caster



Question No:15

Development of embryo takes place at

(A) Chalazal end of embryo sac
(B) Micropyle end of embryo sac
(C) Near only integument of embryo sac
(D) All are correct



Question No:16

Zygote divides after formation of endosperm

(A) To provide assured nutrition to developing endosperm
(B) To provide assured nutrition to developing embryo
(C) None of them
(D) Both are correct



Question No:17

The development of embryo in both monocotyledons and dicotyledons

(A) Same
(B) Differ greatly
(C) Biennials in early staples of development
(D) Both (b) and (c)



Question No:18

Which of the following is correct?

(A) Proembryo —> Mature embryo —> Globular embryo
(B) Proembryo —>Globular embryo —> Mature embryo
(C) Globular embryo -> Proembryo -> Mature embryo
(D) Mature embryo —> Globular embryo —>Proembryo



Question No:19

The portion of embryo above the cotyledon is called _____ and below the cotyledon is called as _____

(A) Epicotyl, hypocotyl
(B) Hypocotyl, epicotyl
(C) Plumule, radical
(D) Radical and Plumule



Question No:20

Epicotyl terminates into

(A) Stem tip
(B) Root tip
(C) Plumule
(D) Both (a) and (c)



Question No:21

Hypocotyl terminates into

(A) Root tip
(B) Stem tip
(C) Plumule
(D) Both (a) and (c)



Question No:22

Embryo of monocotyledon posses only

(A) Two cotyledon
(B) One cotyledon
(C) Scutellum
(D) Both (b) and (c)



Question No:23

The root cap of monocot is covered in

(A) Coleoptile
(B) Coleorrhiza
(C) Root tip
(D) None of them



Question No:24

The leaf primordia enclosed in hollow foliar structure called as

(A) Coleoptile
(B) Coleorrhiza
(C) Root tip
(D) None of them



Question No:25

Assertion: Pollen grains are well preserved as fossils.
Reason: Pollen posses sporopollenin.

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