Tag: germination of seed

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Questions Related to germination of seed

Multiple choice evs seed becomes plant germination of seed seed germination journey of seed

Select the correct option:


The respiration in germinating seeds produces energy which can be detected in the form of ___________.

  1. Water

  2. Heat

  3. Oxygen
  4. ${CO} _{2}$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
During germination, the respiration rate of seed is very high which releases a very high amount of energy and around 30 to 40% of energy is converted into ATP and utilize by the plant for its growth and rest is evolved in the form of heat which can be detected.
So the correct option is 'Heat'.
Multiple choice evs seed becomes plant germination of seed seed germination journey of seed

What is true about phytochrome?

  1. ${P} _{r}$ absorbs red light and becomes ${P} _{fr}$
  2. ${P} _{r}$ absorbs yellow light and becomes ${P} _{fr}$
  3. ${P} _{fr}$ absorbs yellow light and becomes ${P} _{r}$
  4. ${P} _{fr}$ absorbs red light and becomes ${P} _{r}$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Phytochrome is a pigment found in plants which is involved in various plant processes like seed germination. Seed germination requires sufficient amount of P$ _{pr}$. P$ _r$ is synthesized by germinating seeds and is converted to P$ _{pr}$ when exposed to red light. However, when seeds are exposed to far-red light, they will not germinate as P$ _{pr}$ is converted to P$ _r$.

Thus, the correct answer is option A.

Multiple choice evs seed becomes plant germination of seed seed germination journey of seed

Light inhibits seed germination of

  1. Lactuca

  2. Capsella

  3. Allium

  4. Tobacco
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Germination of most of the seed is under the control of light. Usually, red light induces seed germination whereas far-red light suppresses germination. However, light inhibits seed germination of Mediterranean plants like Allium. It usually grows as crowded vegetation and germination take place in dark condition.

Thus, the correct answer is option C.

Multiple choice evs seed becomes plant germination of seed seed germination journey of seed

Which of the following is an example of Negative Photoblastic seed?

  1. Onion

  2. Lily

  3. Nigella

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

Negative photoblastic seeds are those seeds which are able to grow in dark and while light inhibits their growth and seed is unable to come out from underground. Plants like onion, lily, and nigella re of such type.

So the correct option is 'All of the above'.

Multiple choice evs seed becomes plant germination of seed seed germination journey of seed

The main function of cotyledons in a seed is to

  1. provide protection to the radicle and plumule

  2. help in seed germination

  3. supply food, to the young embryo

  4. store food materials
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A cotyledon is part of the embryo within the seed of a plant. Often when the seed germinates or begins to grow, the cotyledon may become the first leaves of the seedling. contains protein, fats, and starches which provide energy for the developing seedling. The cotyledons provide a similar function. These are the seed leaves and they also contain storage of food for the developing plant. The cotyledons in some cases are major photosynthetic producers during germination. 

So, the correct option is, 'help in seed germination'.