Biology · Environmental Studies

Plant Reproduction and Germination

835 Questions

Plant reproduction and germination involve seed structure, cotyledon function, and dispersal mechanisms. These core botany concepts frequently appear in general science sections. Practice these questions to ensure better retention.

Seed germination typesSeed dispersal mechanismsCotyledons and albuminous seedsCryptogamic plantsPhanerogams reproduction

Plant Reproduction and Germination Questions

Multiple choice

What is the phenomenon of vernalisation concerned with?

  1. Induction of flowering in plants by cold treatment

  2. Thermoregulatory adaptation in cold-blooded animals

  3. Migration of birds from their homes to summer habitat.

  4. Preservation of plant germplasm at low temperature
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Vernalisation is flowering at low temperature (true). 

Multiple choice

Which of the following statements is incorrect?

  1. Gymnosperms are usually perennial and evergreen.

  2. Cotyledons emerge and become green when the seed germinates.

  3. Phanerogams are plants with hidden reproductive organs.

  4. Angiosperms are flowering plants.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Cryptogamaes are the plants with hidden reproductive organs.

Multiple choice

In an experiment, a student put a small quantity of seeds in a container filled with water and left this aside for a day. Next day, he drained the water completely and wrapped the seeds with a piece of wet cloth and set it aside. Which among the following is the possible answer for this experiment?

  1. To produce a new variety of the plant

  2. To produce sprouts

  3. To protect the seeds from diseases

  4. To preserve the seeds
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The above activity results in sprouted seeds i.e. a small white structure grown out of the seeds.

Multiple choice

Which of the following movements is not caused by growth?

  1. A climbing pea plant

  2. A germinating seed

  3. Drooping leaves of touch–me–not

  4. A shoot bending towards light
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

‘Touch-me-not’ plants are sensitive plants. They do not show growth as they fold up and droop in response to touch. This is because of the reason that when such plants are touched or disturbed, certain specialised cells in the stem become sensitive and release certain chemicals. These chemicals help in removing the water from vacuoles of the cells. As a result of this, water diffuses out of the plant cells, making them shrink.

Multiple choice biology respiration in living organisms breathing in plants mode of respiration in plants process of respiration

If you dip a sack full of paddy seeds in water over night and then keep it out for a couple of days, it feels warm. What generates this heat?

  1. Imbibition

  2. Exothermic reaction between water and seed coats

  3. Friction among seeds due to swelling

  4. Respiration
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Seeds are living organisms that continue to respire even when dormant. Respiration is an exothermic process that releases energy in the form of heat, which causes the temperature increase observed in the sack.

Multiple choice evs developmental journey of seed seed to plants germination of seeds life within the seed introduction to plant organs and germination

Renu soaked some moong seeds overnight in water. Next day, after draining out the water, she wrapped the seeds in a wet cloth. After a day, she observed small white structures growing out of the seeds. These small white structures will develop into

  1. Stems

  2. Roots

  3. Leaves

  4. Flowers
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Sprouts develop in the pulses or grain under humid environment with adequate amount of water fasten the process of germination and Roots comes out.

So the correct option is 'Roots'.