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

Why plants growing in harsh environments such as deserts, sand dunes, and arctic tundra often reproduce vegetatively?

  1. Vegetative reproduction is not as risky and energy consuming as making seeds

  2. Seeds would be eaten by hungry animals in these environments

  3. There are few animals available to pollinate them

  4. All of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Vegetative propagation, the ability of plants to reproduce without sexual reproduction, by producing new plants from existing vegetative structures. Many plants are able to tide over unfavourable conditions. This is because of the presence of organs of asexual reproduction like the tubers, corm, bulbs, etc.

Multiple choice

Phytochrome pigment participates in

  1. photoperiodic response only

  2. vernalisation

  3. seed germination of light-sensitive seeds

  4. flowering and seed germination of photoblastic seeds
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

 Phytochrome pigment participates in flowering and seed germination of photoblastic seeds.

Multiple choice

Which tissue contributes to the hardness of seed coat?

  1. Sclerenchyma

  2. Collenchyma

  3. Parenchyma

  4. Epidermis

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

Sclerenchyma is a tissue composed of dead cells with extremely thick, lignified walls that provide maximum mechanical strength. Sclereids, a specific type of sclerenchyma cell, are responsible for the hardness of seed coats and nut shells. This protection is vital for the dormant embryo inside.

Multiple choice

Which is the best time to harvest Ramie?

  1. Mature stage

  2. Before beginning of flowering

  3. Any time after flowering

  4. Flowering stage

  5. When the plant is dried
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Yes, it is the correct answer because at this stage there is a decline in plant growth and the maximum fibre content can be achieved.

Multiple choice

Which of the following is/are incorrect regarding gymnosperms?

  1. They are known as ancestors of flowering plants.

  2. Their seeds are enclosed within a fruit.

  3. They include usually woody trees.

  4. They have unisexual flowers.

  5. Pine tree is an example of gymnosperm.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Yes, it is the correct answer. The seeds of angiosperms are enclosed within a fruit, while gymnosperms have naked seeds.

Multiple choice

Seeds are well preserved in

  1. cool but dry condition.

  2. only dry condition.

  3. hot and dry condition.

  4. wet and cool condition
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Seeds are best preserved in cool and dry conditions to prevent premature germination and the growth of mold or fungi. High humidity or heat can damage the embryo and reduce the viability of the seeds.

Multiple choice

Epiblast in grasses is a reduced

  1. seed

  2. cotyledon

  3. endosperm

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

In the grass embryo, the epiblast is a small, scale-like structure located opposite the scutellum, which is considered a reduced second cotyledon.

Multiple choice

Recalcitrant seeds are those

  1. which remain healthy even in the absence of moisture

  2. which can grow at any time

  3. which get killed on reduction of moisture

  4. Both (2) and (3)
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

 Recalcitrant seeds are those which get killed on reduction of moisture. Plants that produce recalcitrant seeds include avocado, mango, mangosteen, lychee, cocoa, rubber tree, some horticultural trees.

Multiple choice

Which of the following is a fast change?

  1. Germination of a seed

  2. Burning of paper

  3. Coming of spring

  4. Rusting of iron swing

  5. Phases of moon
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

This is the correct answer. Fast changes occur over a short interval of time. 

Multiple choice

Baby plant present in a seed is called

  1. Plumule

  2. Radicle

  3. Embryo

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The embryo is the rudimentary plant contained within a seed, which develops into a new plant upon germination.