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

The time of sprouting of any cereal depends on

  1. temperature and humidity

  2. temperature and pressure

  3. rainy season

  4. winter season
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The sprouting time of seeds may vary according to temperature and humidity of the weather.

Multiple choice

Match the following:

 
1. Roots A. are responsible for reproduction.
2. Leaves B. bears branches, leaves, fruits and flowers.
3. Flowers C. are the food factories of the plant.
4. Stem D. fix the plant to the soil and absorb water and minerals from the soil.

  1. 1 - A, 2 - C, 3 - D, 4 - B

  2. 1 - C, 2 - A, 3 - B, 4 - D

  3. 1 - C, 2 - B, 3 - A, 4 - D

  4. 1 - D, 2 - C, 3 - A, 4 - B

  5. 1 - A, 2 - B, 3 - C, 4 - D
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This is a correct answer because roots  fix the plant to the soil and absorb water and minerals from the soil, leaves are food factory of the plant, flowers are responsible for the reproduction, and stem bears branches, leaves fruits and flowers.

Multiple choice

The main property/ies of Ephemerals is/are

  1. that they withstand dry seasons

  2. that they have a short-period life-cycle

  3. the life-cycle is of 6 - 8 weeks

  4. they produce drought resistant seeds

  5. all of the above
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Since all the above mentioned statements are correct, therefore this option is correct.

Multiple choice

To break dormancy in a seed with a rudimentary embryo one should

  1. soak the seeds to remove inhibitors

  2. break the seeds to remove inhibitors

  3. germinate the seeds under red light to promote germination

  4. none of these

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Seeds with rudimentary (underdeveloped) embryos require a period of after-ripening where the embryo matures to the point where germination can occur. Soaking removes inhibitors but doesn't help if the embryo isn't ready. Breaking the seed doesn't address embryo development. Red light promotes germination in mature seeds, not immature embryos. None of these methods work - the seed needs time for embryo maturation, not treatment.

Multiple choice

Which of the following is false about vernalisation?

  1. Site of perception of vernalisation stimulus is stem apex.

  2. Vernalisation does not induce flowering but prepares the plants for flowering.

  3. Low temperature affects germination.

  4. Genetic makeup is not changed by the cold temperature treatment.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

 The induction of flowering by prolonged exposure to low temperatures, as during the winter in a temperate climate is called vernalisation.

Multiple choice

During parboiling of rice, what will happen?

  1. Nutrients from endosperm travel to bran and hull.

  2. Nutrients from bran and hull travel to endosperm.

  3. There is no movement of nutrients.

  4. The colour of rice changes.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Parboiling involves soaking rice in water and heating it, which causes water-soluble vitamins and minerals from the outer bran and hull layers to migrate into the endosperm. This process improves the nutritional value of polished rice by retaining nutrients that would otherwise be removed during milling.

Multiple choice

Which of the following statements does not characterise seed coat in angiosperms?

  1. The seed coat surrounds the ovule.

  2. The seed coat in the mature angiospermic seed is a paper-thin layer.

  3. The seed coat helps protect the embryo from drying out.

  4. The outer integument has a number of layers.

  5. The maturing ovule undergoes remarkable changes in the integuments.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

This is an incorrect statement as the seed coat in the mature seed can be a paper-thin layer (e.g. peanut) or something more substantial (e.g. thick and hard in honey locust and coconut), or fleshy as in the sarcotesta of pomegranate.

Multiple choice

In plants, enzymes are present in

  1. flowers

  2. leaves

  3. stems

  4. seeds

  5. in all living cells
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

In short, it can be said that enzymes in plants are present in all the living cells catalyzing different reactions.