Endosperm development precedes embryo development because

1. It is  a product of triple fusiony

2. It provides nutrition to developing embryo

3. It is larger than embryo

4. Its development mostly occurs by free nuclear division in PEN

Subtopic:  Endosperm |
 84%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

Viability of seeds

1. Maybe lost within a few months

2. Is 1000 years in Lupinus arcticus

3. Recorded in Phoenix is 10000 years

4. Can be tested by 0.1% solution of TTC

Subtopic:  Seed |
 62%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

Pollen grains lose viability within 30 minutes of their release in the members of family

1. Rosaceae

2. Solanaceae

3. Poaceae

4. Leguminosae

Subtopic:  Stamen: Male Gametophyte |
 82%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

advertisementadvertisement

Endosperm persists in the mature seeds of

1. Pea

2. Groundnut

3. Gram

4. Maize

Subtopic:  Seed |
 75%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

Functional megaspore in Polygonum divides by free nuclear mitotic divisions and develops into 8 nucleated and 7 celled female gametophytes. The largest cell of this gametophyte is

1. Antipodal cell

2. Central cell

3. Synergid cell

4. Egg cell

Subtopic:  Pistil: Female Gametophyte |
 89%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

Find the incorrect statements with respect to pollen grain in angiosperms plants

a. Germ pores are areas in pollen wall where intine and sporopollenin are absent

b. The vegetative cell is bigger, has abundant food reserves, and a large irregularly shaped nucleus

c. The fascinating array of patterns and designs are exhibited by exine wall

d. In over 60 percent of angiosperms, pollen grains are shed at 3-celled stage

1. c and d

2. a and d

3. b and d

4. a and c

Subtopic:  Stamen: Male Gametophyte |
 77%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

advertisementadvertisement

Most of the aquatic and land plants are pollinated by

1. Insects or wind

2. Water and insects respectively

3. Abiotic factors only

4. Water and wind respectively

Subtopic:  Pollination & Outbreeding Devices |
 71%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

Which one of the following statements is not true?

1. Filiform apparatus present at the chalazal end of the synergies guides the entry of pollen tube
2. Pollen - pistil interaction is a dynamic process involving pollen recognition followed by promotion or inhibition of the pollen 
3. Majority of insect-pollinated flowers are large, colourful, fragrant and rich in nectar
4. Apomixis is a form of asexual reproduction that mimics sexual reproduction
Subtopic:  Pistil: Female Gametophyte |
 82%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

During microsporogenesis

1. Microspore tetrad is developed by meiosis in sporogenous tissue

2. Pollen grains are developed by mitosis in sporogenous tissue

3. Microspore develops into the male gametophyte

4. Male gametes are produced by pollen grain

Subtopic:  Stamen: Microsporangium |
 78%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

advertisementadvertisement

Mark the mis-matched pair

1. Orchid           -  Tiny seeds

2. Hydrophily    -  Common in dicots

3. Pollen grain   -  25 to 50 μm in diameter

4. Parthenium   -  Pollen allergy 

Subtopic:  Stamen: Male Gametophyte | Seed |
 82%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch