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

Where should the seeds be generally sown?

  1. Deep inside the earth with proper spacing

  2. Scattered on soil with proper spacing

  3. Deep inside the earth with least spacing

  4. At adequate depth with proper spacing
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Seeds should neither be sown very deep nor on surface to optimize their germination. Also, there should be proper spacing between the seeds to allow their proper growth. Hence, seeds should be sown at adequate depth and with proper spacing between them.

Multiple choice

Gymnosperms are characterised by

  1. seedless fruits

  2. seeds produced in cones

  3. bearing of flowers

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

'Gymno' means naked and 'sperm' means seed. The plants of this group (1) have well-differentiated plant bodies (2) have vascular tissues and (3) produce seeds. Although they produce seeds, but the produced seeds are naked. The seeds are not enclosed in ovaries as in flowering plants. They grow on the surface of modified leaf in a cone.

Multiple choice

_________ are known as 'seed - leaves'.

  1. Fruits

  2. Flowers

  3. Seeds

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

They serve to absorb nutrients present in the seed until the seedling is able to produce first true leaves and then begin photosynthesis.

Multiple choice

Fruits are the means by which these plants disseminate seeds. Which of the following fruits develops from syncarpous inferior ovary having axile placentation?

  1. Legume

  2. Siliqua

  3. Hesperidium

  4. Cypsela

  5. Samara
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

It is a simple fleshy fruit. It develops from a syncarpous inferior ovary having axile placentation. From the inner wall of the endocarp grow out numerous, thick, swollen hairs containing a syrupy juice. They are edible. For e. g., Orange, Lemon.

Multiple choice

How is PARTHENOCARPY best described?

  1. Fruits formed without fertilisation

  2. Fruits formed without pollination

  3. Seed without fertilisation

  4. Only seeds and no fruits

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

Parthenocarpy (literally meaning virgin fruit) is the natural or artificially induced production of fruit without fertilisation of ovules. Therefore, the fruit is seedless.