NEET-Sexual Reproduction in flowering plants MCQs

Question No:1

Male gametes in angiosperms are formed by

(A) Mitotic division in vegetative cell
(B) Meiotic division in pollen mother cell
(C) Meiotic division in vegetative cell
(D) Mitotic division in generative cell



Question No:2

The pollen grains are shed in 3-celled stage in

(A) > 60% Angiospermic plant
(B) > 70% Angiospennic plant
(C) < 40% Angiospermic plant
(D) < 20% Angiospermic plant



Question No:3

Which of the following statement is correct?
(A) Pollen grains are shed in 2-celled stage in > 40% plants
(B) Pollen grains are shed in 3-celled stage in < 60% plant
(C) Generative cell divides meiotically to form male gametes
(D) Inrine of pollen is made up of sporopollen in

(A) A, B, C
(B) All are correct
(C) All are wrong
(D) Only C



Question No:4

Plant came in India as a contaminant with imported wheat

(A) Vinca
(B) Parthenium
(C) Striga
(D) Orobanche



Question No:5

Below figure represents

(A) Self-pollinated flowers
(B) Cross-pollinated flowers
(C) Cleistogamous flowers
(D) None of these



Question No:6

Which one of the following is incorrect?
(A) Parthenium or carrot gases causes pollen allergy
(B) Vegetative cell of pollen has abundant food reserve
(C) All pollen’s cause severe allergies and bronchial afflictions
(D) Sporopollenin is the most resistant organic matter known

(A) All are correct
(B) A
(C) B
(D) C



Question No:7

Pollen grains
(A) Represent gametophytic phase of plant
(B) Can cause severe allergies like asthma and bronchitis
(C) Are rich in nutrient
(D) Are used as food supplements
(E) Are available in form of tables and syrups in market of western countries

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



Question No:8

Viability of pollen grains depend upon

(A) A particular species
(B) Prevailing temperature
(C) Humidity
(D) All of the above



Question No:9

Rice pollen grains are viable for

(A) 6.0 mins
(B) 30 mins (approx)
(C) 60 mins (approx)
(D) 40 mins



Question No:10

Pollens are stored in

(A) Oxygen (-196⁰C)
(B) Nitrogen (-196⁰C)
(C) Oxygen (196⁰C)
(D) Nitrogen (+196⁰C)



Question No:11

Syncarpous condition is referred to as

(A) Gynoecium containing single pistil
(B) More than one pistil fused together
(C) More than one pistil free from one another
(D) Gynoecium containing many pistils



Question No:12

Landing platform for pollen grains is

(A) Stigma
(B) Style
(C) Ovary
(D) None of them



Question No:13

Bulged basal part of pistil is

(A) Stigma
(B) Style
(C) Ovary
(D) None of them



Question No:14

Elongated slender part of pistil is

(A) Stigma
(B) Style
(C) Ovary
(D) None of them



Question No:15

Megasporangia is referred to as

(A) Ovule
(B) Ovary
(C) Gynoecium
(D) All of the above



Question No:16

Plants having single ovule in ovary are

(A) Wheat
(B) Paddy
(C) Mango
(D) All of them



Question No:17

What represents ‘A’ in the following figure?

(A) Cotyledons
(B) Scutellum
(C) Shoot apex
(D) Radicle



Question No:18

More than one ovule is found in ovary of

(A) Wheat
(B) Paddy
(C) Papaya
(D) None of these



Question No:19

The stalk attaching ovule to placenta is

(A) Funiculus
(B) Hilum
(C) Raphe
(D) Chalaza



Question No:20

The junction between ovule and funiculus is

(A) Placenta
(B) Hilum
(C) Raphe
(D) Chalaza



Question No:21

The tips on the ovule where integument are absent are called

(A) Germ pore
(B) Micropyle
(C) Both are correct
(D) None of the above



Question No:22

The end opposite to micropyles end is called

(A) Funicle
(B) Chalaza
(C) Germ pore
(D) Hilum



Question No:23

Mass of cell present inside the integuments of megasporangium having abundant food reserve is

(A) Ovule
(B) Nucellus
(C) Sporogenous cells
(D) None of them



Question No:24

Female gametophyte of angiosperm is referred to as

(A) Megasporangium
(B) Megaspore
(C) Embryo sac
(D) Nucleus



Question No:25

Embryo sac is formed by

(A) Reduction division in megaspore
(B) Equational division in megaspore
(C) Reduction division followed by equational division in megaspore mother cell
(D) Both (b) and (c)