Megaspore mother cell differentiates from

1. Nucellus in the micropylar region.

2. Nucellus in the chalazal region.

3. Primary parietal cell in chalazal region.

4. Integument cell in micropylar region.

Subtopic:  Pistil: Female Gametophyte |
To view explanation, please enrol in the course below.
NEET 2021 - Achiever Batch - Aryan Raj Singh
To view explanation, please enrol in the course below.
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:


To form four fully developed Polygonum type of embryosacs in angiosperms total number of meiosis and mitosis divisions generations required are :-

1. 4, 12

2. 1, 3

3. 4, 4

4. 1, 12

Subtopic:  Pistil: Female Gametophyte |
To view explanation, please enrol in the course below.
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:


Which one of the following statement is false in respect of flowering plants?

1. Parthenocarpy can be induced through the application of growth hormones
2. Integuments encircle the ovule except at the tip where a small opening called the germ pore is organized
3. Endosperm development precedes embryo development
4. Apomicts have several advantages in horticulture and agriculture

Subtopic:  Pistil: Ovule |
To view explanation, please enrol in the course below.
NEET 2021 - Achiever Batch - Aryan Raj Singh
To view explanation, please enrol in the course below.
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:


A plant breeder employ technique of emasculation

1. To cover the flower with a bag
2. To prevent self-pollination
3. To prevent stamen from being contaminated
4. To produce female plant

Subtopic:  Pollination & Outbreeding Devices |
To view explanation, please enrol in the course below.
NEET 2021 - Achiever Batch - Aryan Raj Singh
To view explanation, please enrol in the course below.
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:


Which of the following has proved helpful in preserving pollens as fossils?
1. Pollenkit  
2. Cellulosic intine
3. Oil content
4. Sporopollenin

 

Subtopic:  Stamen: Microsporangium |
Please attempt this question first.
Please attempt this question first.

Difficulty Level:


Winged pollen grains are present in
1 Mustard
2. Cycas
3. Mango
4. Pinus

 

Subtopic:  Pollination & Outbreeding Devices |
To view explanation, please enrol in the course below.
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:


Pollen grains can be stored for several years in liquid nitrogen having a temperature of
1. –120 °C
2. –80 °C
3. –196 °C
4. –160 °C

 

Subtopic:  Stamen: Male Gametophyte |
Please attempt this question first.
Please attempt this question first.

Difficulty Level:


Double fertilization is

1. Fusion of two male gametes of a pollen tube with two different eggs
2. Fusion of one male gamete with two polar nuclei
3. Fusion of two male gametes with one egg
4. Syngamy and triple fusion

Subtopic:  Double Fertilization |
Please attempt this question first.
Please attempt this question first.

Difficulty Level:


Which one of the following plants shows a very close relationship with a species of moth, where none of the two can complete its life cycle without the other?
1. Hydrilla
2. Yucca
3. Banana
4. Viola

 

Subtopic:  Pollination & Outbreeding Devices |
Please attempt this question first.
Please attempt this question first.

Difficulty Level:


Double fertilization is exhibited by:

1. Algae

2. Fungi

3. Angiosperms

4. Gymnosperms

Subtopic:  Double Fertilization |
Please attempt this question first.
Please attempt this question first.

Difficulty Level: