Tag: introduction to plant organs and germination

Questions Related to introduction to plant organs and germination

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

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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'. 

State whether the following statements are true or false.
A dry pea seed will have more dry weight than a germinated one.

evs seeds and seeds introduction to plant organs and germination seed to plants germination of seeds

  1. True

  2. False

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Correct Option: A
Explanation:

The dry seeds of the pea have more dry weight as all the moisture in the seeds got absorbed and becomes hard due to the loss of water. In the germinated seed, more water is present so its fresh weight will be higher than the dry seed. Fresh weight is the weight of the living part of the plant while dry weight is the weight of the dry plant part.

So, the correct statement is 'True'. 

Who of the following is associated with the description of life-forms in plants communities?

biology diversity in living things and their classification introduction to plant organs and germination seed to plants germination of seeds

  1. Tansley

  2. Shelford

  3. Slobodkin

  4. Raunkiaer

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Correct Option: A

Consider the following plants.
a. Curcuma longa
b. Ferula asafoetida
c. Myristica fragrans
d. Smilax aristolochiaefolia
From which of the plants are underground parts used for obtaining spices or products of commercial value?

biology diversity in living things and their classification introduction to plant organs and germination seed to plants germination of seeds

  1. $1$ and $2$

  2. $3$ and $4$

  3. $1, 2$ and $4$

  4. $1, 2, 3$ and $4$

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Correct Option: A

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