In angiosperms, viability of pollen grains generally depend on

(1) Pressure and humidity

(2) Temperature and humidity

(3) Plant type

(4) Structure of pollen

Subtopic:  Pollination & Outbreeding Devices |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:


Pollen grain of which among the following lose viability within 30 minutes?

(1) Wheat

(2) Rosaceae

(3) Leguminoseae

(4) Solanaceae

Subtopic:  Stamen: Male Gametophyte |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:


Which among the following is not a feature of pistil?

(1) Monocarpellary

(2) Syncarpous

(3) Monosporic

(4) Apocarpous

Subtopic:  Pistil: Female Gametophyte |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:


Cryopreservation is a technique to preserve substances like pollen grains in liquid nitrogen at temperature

(1) –150 °C

(2) 77.15 K

(3) –210 °C

(4) 110 K

Subtopic:  Stamen: Male Gametophyte |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:


A, B, C, D in the following diagram respectively are:-

(1) Hilum, funicle, inner integument, micropyle

(2) Hilum, funicle, outer integument, micropyle

(3) Funicle, outer integument, nucellus, chalazal pole

(4) Funicle, outer integument, nucellus, micropylar end

Subtopic:  Pistil: Ovule |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:


Microsporangium is generally surrounded by 4 wall layers. Which of the following 3 wall layers perform the function of protection and help in the dehiscence of anther to release the pollen?
(1) Epidermis, tapetum, endothecium

(2) Epidermis, aril, endothecium

(3) Epidermis, endodermis, mesocarp

(4) Epidermis, middle layer and endothecium

Subtopic:  Stamen: Microsporangium |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:


The above given diagram is an enlarged view of one microsporangium of a mature anther. Identify A, B and C
(1) A - Middle layer, B - Endothecium, C – Tapetum

(2) A - Endothecium, B - Tapetum, C - Middle layer

(3) A - Endothecium, B - Middle layer, C – Tapetum

(4) A - Tapetum, B - Middle layer, C - Endothecium

Subtopic:  Stamen: Microsporangium |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:


Which of the following points is incorrect about sporopollenin?
(1) It is one of the most resistant organic material known

(2) It can withstand high temperature and strong acids and alkali

(3) 2 enzymes that degrade sporopollenin are known so far

(4) Pollen grains are well preserved as fossils because of presence of sporopollenin

Subtopic:  Stamen: Male Gametophyte |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:


The above diagram shows some stages in microgametogenesis. Identify A, Band C:
               A                               B                              C
(1) Symmetric spindle        Generative cell           Vegetative cell

(2) Symmetric spindle        Vegetative cell           Generative cell

(3) Asymmetric spindle       Vegetative cell           Generative cell

(4) Asymmetric spindle       Generative cell           Vegetative cell

Subtopic:  Stamen: Male Gametophyte |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:


Which of the following statements is false?

I. Pollen grains represents male gametophyte

II. In angiosperms partially developed male gametophytes are pollinated

III. Generative cell is siponogenous while vegetative cell is spermatogenous

IV. Formation and differentiation of pollen grains is called microsporogenesis

V. Hay fever is a pollen allergy

VI. Pollen grains of some plants produce severe allergy and respiratory or bronchial diseases

VII. Pollen grains are poor in nutrients.

(1) I and VII         

(2) III and VII      

(3) IV and V         

(4) VI and VII

Subtopic:  Stamen: Male Gametophyte |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level: