Tag: seed germination

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Questions Related to seed germination

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

A gas required for germination of (pea) seed is

  1. Nitrogen

  2. Oxygen

  3. Hydrogen

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

Air (oxygen) is necessary for seed germination (pea seed). During germination rapid cell division takes place. Energy is required for cell division. This energy is obtained from oxidation. The oxygen required for oxidation is supplied by the air. So, air is necessary for seed germination. So, the correct answer is ‘Oxygen’.

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

Which is not essential for seed germination in most cases?

  1. Oxygen

  2. Light

  3. Suitable temperature

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

Water, air and suitable temperature are necessary for seed germination. Water is necesssary for germination because food is stored in the seeds in dry condition, but the developing embryo cannot utilize this dry food. Food can be utilized in liquid form only and seeds can utilize only dissolved oxygen. Excess water stops germination because once all the dissolved oxygen is utilised by the seed, further germination is not possible as the life supporting oxygen is now lacking. During germination rapid cell division takes place. Energy is required for cell division. This energy is obtained from oxidation. The oxygen required for oxidation is supplied by the air. So, air is necessary for seed germination. Suitable temperature is necessary because low temperature retards the embryo activity and high temperature destroys the delicate embryo tissue. So, the correct answer is 'Light'.

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

Essential requirement for seed germination is

  1. ${O} _{2}$ and light
  2. ${H} _{2}O$ and ${O} _{2}$
  3. ${H} _{2}O$ and high temperature

  4. Scarification and vernalisation
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The process of seed germination depends on many factors like temperature, water, oxygen and sometime light. Seeds usually germinate within a wide temperature range. Hence, essential requirement for seed germination to take place is water and oxygen. Germination cannot take place without sufficient supply of water. In presence of sufficient moisture, water is taken up by seed. Oxygen is essential for aerobic respiration. 

Thus, the correct answer is option B.

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

Movement stimulated by external factor is

  1. Spontaneous movement

  2. Autonomic movement

  3. Physical movement

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

Autonomic movement is the spontaneous movement of the protoplasm seen in aquatic plants due to internal stimulus. It is not related to the external stimulus. Movement of cilia and flagella is an example of autonomic movement. A movement shown by a plant part in response to an external factor is called as paratonic movement. In this, the direction of movement is controlled by the direction of the stimulus. 

Thus, the correct answer is option D.

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

Seeds which do not germinate in the dark are called as

  1. Positive photoblastic

  2. Negative photoblastic

  3. Non-photoblastic

  4. None of the aboove
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Positive photoblastic seeds require white light to germinate in dark the growth does not occur. this response is controlled by phytochromes and includes the plants like mango, wheat etc.

So the correct option is 'Positive photoblastic'.

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

During the germination of pulse seeds, the major food reserves are degraded by the activity of __________.

  1. Amylase

  2. Lipase

  3. Protease

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

Pulse seeds are rich in starch. During germination, the enzyme amylase breaks down these starch reserves into simpler sugars to provide energy for the growing embryo.

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

The period of rapid starch formation and decrease in sugar in developing seeds is associated with a marked increase in.

  1. Phosphorylase

  2. Phosphates

  3. Alpha amylase

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

Phosphorylase is the enzyme responsible for the reversible conversion of starch to glucose-1-phosphate, playing a key role in starch synthesis and degradation in developing seeds.

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

Match List I(Type/condition of germination) with List II(Seeds of) and select the correct answer using the codes given the lists.

List-I List-II
a. Positively photoelectric $1$. Rice
b. Non-photoelectric $2$. Lettuce
c. Possible under anaerobic conditions $3$. Cucumber
d. Requires acid scarification $4$. Leucaena


  1. A-$2$, B-$3$, C-$4$, D-$1$
  2. A-$2$, B-$3$, C-$1$, D-$4$
  3. A-$3$, B-$2$, C-$1$, D-$4$
  4. A-$3$, B-$2$, C-$4$, D-$1$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Positively photoelectric seeds include lettuce, while non-photoelectric seeds include cucumber. Anaerobic germination is possible in rice, and acid scarification is often required for hard-coated seeds like Leucaena.

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

Vivipary may be described as

  1. Germination of seed with cotyledons above the soil

  2. Germination of seed with cotyledons under the soil

  3. Formation of a fruit without pollination

  4. Development of a seedling within an attached fruit
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Vivipary is a condition where the embryo derives nutrition from the parent and is attached it attains maturity. In plants, vivipary refers to the development of a seedling within an attached fruit so that the seedling can derive nutrition.

So, the correct answer is 'Development of a seedling within an attached fruit'