Biology · Environmental Studies

Plant Reproduction and Germination

892 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 general knowledge science & technology

Germinating seeds respire slowly as compared with leaves.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Germinating seeds are metabolically very active as they break dormancy and begin growth, requiring rapid respiration to produce energy (ATP) for cell division and elongation. Mature leaves primarily photosynthesize and have relatively slower respiration rates compared to their photosynthetic activity. Therefore, the statement is false.

Multiple choice softskills communication

Plant a seed

  1. Feel better

  2. To do something that will develop more in the future

  3. Idea that when an economy is performing well

  4. Common example of something
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

'Plant a seed' metaphorically means to do something that will develop, grow, or produce results in the future. This could be planting an idea, initiating a project, or starting a process. Option B correctly captures this meaning of doing something with future development potential. Option C incorrectly refers to economic concepts.

Multiple choice

Seed develops from which part of the plant?

  1. Ovary

  2. Ovule

  3. Embryo

  4. Zygote

  5. Embryo sac
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Plant structure that develops into a seed when fertilized is called ovule. It is typically located inside the portion of the flower called the gynoecium.

Multiple choice

Which of the following statements is/are false?

a. Animals have greater powers of regeneration than plants. b. It is the thick walls of spores that help them survive adverse environmental conditions. c. No seeds are produced in the process of vegetative reproduction.

  1. Only a

  2. Only a and b

  3. Only b

  4. Only b and c

  5. Only c
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

This is the correct option as this statement is false. Plants have greater powers of regeneration than animals.

Multiple choice

Pollen is a powder made of pollen grains, which produces sperm cells of seed plants. Which of the following statements regarding the pollen production in angiosperms is INCORRECT?

  1. Pollen of angiosperms must be transported to the stigma of a compatible flower.

  2. The pollen is eventually released when the anther forms openings.

  3. Each microspore divides mitotically to form an immature microgametophyte.

  4. The microsporangia form sacs or pockets (locules) in the anther.

  5. Each microsporangium contains haploid pollen mother cells.
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Each microsporangium is lined with a nutritive tissue layer called the tapetum and initially contains diploid pollen mother cells.

Multiple choice

A fruit is a mature ovary of a flowering plant that is edible and usually eaten raw. Which is the following statements does NOT characterise the fruit development in angiosperms?

  1. Each microsporangium contains diploid microspore mother cells.

  2. Within the megagametophyte both the two sperm unites with the egg, forming a zygote.

  3. After pollination, a tube grows from the pollen through the stigma into the ovary.

  4. The zygote gives rise to the endosperm.

  5. The pericarp is often differentiated into two or three distinct layers.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Within the megagametophyte one of the two sperm unites with the egg, forming a zygote, and the second sperm enters the central cell forming the endosperm mother cell, which completes the double fertilisation process.

Multiple choice

During the early development of a vascular plant, i.e., before starting the process of photosynthesis the essential nutrients are provided by ____________.

  1. locules

  2. Strobilus

  3. Calyptra

  4. Integuments

  5. Cotyledons
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Two large green hemispherical structures which enclose the embryonic axis is called as the cotyledons. The cotyledons may be one or two in number depending on the type of plant. The cotyledons are important because it give nutrients during the early development of the plant before starting the process of photosynthesis.

Multiple choice

Which of the following is an endogenous dormancy?

  1. Physical dormancy

  2. Mechanical dormancy

  3. Chemical dormancy

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

Physiological dormancy inhibits embryo growth and seed germination until chemical changes take place. It is an endogenous dormancy.

Multiple choice

The dormancy taking place in non-dormant and post dormant seeds is

  1. secondary dormancy

  2. combinational dormancy

  3. morphophysiological dormancy

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

Secondary dormancy occurs in some non-dormant and post dormant seeds that are exposed to conditions that are not favorable for germination, like high temperatures. It is caused by conditions that occur after the seed has been dispersed.

Multiple choice

The food reserve of a seed is

  1. radicle

  2. cotyledon

  3. plumule

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

The cotyledon is the seed leaf that stores food reserves to nourish the embryo during germination. Radicle becomes the root, plumule becomes the shoot, and seed coat is the protective outer covering.