Tag: life within the seed

Questions Related to life within the seed

Consider the following statements.
a. The seeds of Zea mays would germinate immediately after falling from the plant if favourable conditions of moisture, temperature and aeration are available.
b. Seed-coat dormancy is exhibited by Cassia and Gossypium
Which of the statements given is/are correct?

evs life within the seed introduction to plant organs and germination seed to plants germination of seeds developmental journey of seed

  1. $1$ only

  2. $2$ only

  3. Both $1$ and $2$

  4. Neither $1$ nor $2$

Show answer
Correct Option: A

How many meiotic divisions are required to produce 200 seeds?

evs life within the seed introduction to plant organs and germination seed to plants germination of seeds developmental journey of seed

  1. 50

  2. 100

  3. 200

  4. 250

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Correct Option: A

State whether the following statements are true or false.
Seedlings grown for a few days in the dark often have lesser fresh weight and greater dry weight than those kept in light for a comparable period.

evs life within the seed introduction to plant organs and germination seed to plants germination of seeds developmental journey of seed

  1. True

  2. False

Show answer
Correct Option: B
Explanation:

For the development of any seedling or plants, both light and dark phases are required for proper growth. The seedlings that are growing requires light as the carbon sources in them and the other nutrients are present in its complete amount but when they are placed in the darkness they are unable to perform certain functions so there is less production of nutrients resulting in lower fresh weight. Thus, the light phase is the phase on which growth of the plant is dependent upon. 

So, the correct statement is 'False'. 

The seeds respirate at the time of germination.White showing this experiment a test tube with KOH is kept in the conical flask to _____________. 

evs life within the seed developmental journey of seed introduction to plant organs and germination seed to plants

  1. Supply oxygen necessary for respiration.

  2. create space in the conical flask by absorbing $CO _3$.

  3. absorb water from the seeds and dry them

  4. make the air in the conical flask acidic

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Correct Option: A

Which of the following members of spermatophyte is able to produce seed but not cones?

evs life within the seed developmental journey of seed introduction to plant organs and germination seed to plants

  1. Eucalyptus and Wolfia

  2. Pinus & Cycas

  3. Pteris & Dryopteris

  4. Eucalyptus & Pinus

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Correct Option: A

During seed germination its stored food is mobilized by?

biology life within the seed developmental journey of seed introduction to plant organs and germination seed to plants

  1. Ethylene

  2. Cytokinin

  3. Abscisic acid

  4. Gibberellin

Show answer
Correct Option: D
Explanation:

Gibberellins invigorate the combination of α-amylase and proteases compound in germinating grains of oats. They are associated with the transformation of starch into sugar. The proteases convert an inert β-amylase to the dynamic frame. The dynamic β-amylase and α-amylase together process starch to glucose which is prepared to meet the metabolic requests of developing life. 

So, the correct option is 'Gibberellin'.

During which of the following stages of seed development, the production and storage of energy in mitochondria increases? 

biology life within the seed developmental journey of seed introduction to plant organs and germination seed to plants

  1. Seed germination

  2. Dormant seed

  3. Development of seeds

  4. Seed formation

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Correct Option: A
Explanation:
Seed germination is a vitality requesting process that requires. while the mitochondrial mass increments amid interphase. It is suggested that the biogenesis of mitochondria amid germination begins from the advancement. 
Thus, the correct option is 'Seed germination.'

Formation of seeds without fertilisation can take place by all except.

biology life within the seed developmental journey of seed introduction to plant organs and germination seed to plants

  1. Germination of vegetative propagule

  2. Apogamy

  3. Diplospory

  4. Sporophytic budding

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Correct Option: A

In Euphorbia, there are $10$ cyathia inflorescence and each inflorescence contains $20$ flowers. One female flower produces $6$ seeds. Calculate the total number of seeds produced by $10$ cyathia.

biology life within the seed developmental journey of seed introduction to plant organs and germination seed to plants

  1. $10,,e1,,e6$

  2. $10,,e20,,e6$

  3. $10,,e20,,e20$

  4. $10,,e6,,e6$

Show answer
Correct Option: A

When dry seeds are placed in wet soil 

biology life within the seed developmental journey of seed introduction to plant organs and germination seed to plants

  1. They absorb water

  2. They increase in size

  3. The hard seed coats get ruptured

  4. All of the above

Show answer
Correct Option: D
Explanation:

When dry seeds are placed in wet soil they absorb water and increase in size because of this the hard seed coats get ruptured and process of germination of seed takes place.