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

Seeds are winged in _____________.

  1. cheiranthera

  2. hiptage

  3. calotropis

  4. moringa

  5. trigonopleura
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Seeds are winged in moringa. Moringa, native to parts of Africa and Asia, is the sole genus in the flowering plant family moringaceae.

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 stores food reserves in the seed to nourish the developing embryo. The radicle becomes the root, plumule becomes the shoot, and seed coat is the protective outer covering.

Multiple choice

The seed dormancy observed in angiosperms due to impermeable layers developing during maturation and drying of the seed is termed as

  1. combinational dormancy

  2. morphophysiological dormancy

  3. chemical dormancy

  4. physical dormancy

  5. mechanical dormancy
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Dormancy that is caused by an impermeable seed coat is known as physical dormancy. Physical dormancy is the result of impermeable layer(s) that develops during maturation and drying of the seed or fruit.This impermeable layer prevents the seed from taking up water or gases. As a result, the seed is prevented from germinating until dormancy is broken.

Multiple choice

Epigeal germination is found in

  1. castor

  2. bean

  3. cotton

  4. all of the above

  5. none of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Epigeal germination is found in all the above.

Multiple choice

Which of the following statements is/are false?

a. The seeds produced by dicots have only one fleshy leave, the cotyledon. b. The root system of dicots has a prominent tap root. c. The flowers of dicots have five or multiple of five petals.

  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. The seeds produced by dicots have embryos with two fleshy leaves, the cotyledon.

Multiple choice

A simple one seeded fruit in which pericarp is fused with seed coat is

  1. achene

  2. caryopsis

  3. cypsela

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

Caryopsis is a one-seeded fruit where the pericarp (fruit wall) is completely fused with the seed coat, making them indistinguishable. This is characteristic of cereals like wheat and maize. Achene has a separate pericarp, cypsela is similar but found in Asteraceae, and nut is a hard one-seeded fruit with unfused walls.

Multiple choice

The process of embryo formation without fertilization is known as

  1. apospory

  2. apogamy

  3. parthenocarpy

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

Apogamy is the development of a sporophyte (embryo) from a gametophyte without fertilization. Apospory is gametophyte from sporophyte, parthenocarpy is fruit development without fertilization (no embryo formation necessarily), and polyembryony is multiple embryo formation.