Tag: introduction to reproduction

Questions Related to introduction to reproduction

This is an example of a very old viable seed excavated from Arctic Tundra. The seed germinated and flowered after an estimated record of $10,000$ years of dormancy. It is?

evs the journey of seeds vegetative propagation and seed dispersal seed dispersal seed dispersal and its methods other modes of vegetative propagation introduction to reproduction vegetative reproduction

  1. Victoria

  2. Lupinus arcticus

  3. Phoenix dactylifera

  4. Strobilanthus kunthiana

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Correct Option: B
Explanation:

There are several records of very old yet viable seeds. The oldest one is of a lupine(Lupnius arcticus) excavated from Arctic Tundra. Seeds of Lupinus arcticus, atleast $10,000$ years old were found in lemming burrows deeply buried in permanently frozen silt of Pleistocene age in ungladated central Yuzon. They readily germinated in the laboratory and have since grown into normal healthy plants.

Parachute type of mechanism of seed dispersal is found in _____________.

evs the journey of seeds vegetative propagation and seed dispersal seed dispersal seed dispersal and its methods other modes of vegetative propagation introduction to reproduction vegetative reproduction

  1. Pea/Leguminosae

  2. Mustard/Cruciferae

  3. Cotton/Malvaceae

  4. Taraxacum/Compositae

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Correct Option: D

Pappus occurs in compositae for

evs the journey of seeds vegetative propagation and seed dispersal seed dispersal seed dispersal and its methods other modes of vegetative propagation introduction to reproduction vegetative reproduction

  1. Air pollination

  2. Air dispersal

  3. Insect pollination

  4. Animal dispersal

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Correct Option: B

Which of the following animal doesn't help in the scattering of seed?

evs the journey of seeds vegetative propagation and seed dispersal seed dispersal seed dispersal and its methods other modes of vegetative propagation introduction to reproduction vegetative reproduction

  1. Birds

  2. Squirrel

  3. Fish

  4. None of the above

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Correct Option: D

Which of the followig seed travels only short distance?

evs the journey of seeds vegetative propagation and seed dispersal seed dispersal seed dispersal and its methods other modes of vegetative propagation introduction to reproduction vegetative reproduction

  1. Mango

  2. Cotton

  3. Neem

  4. Maple

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Correct Option: D
Explanation:

Wind dispersal of seeds do not ensure a coverage of larger distance and it also depends upon the morphology of seed as well. Maple seeds are samaras that mean they have a wing like structure and is also called wind seed but is not able to cover a great distance as it does not blow with the wind but flutter on the ground.

So, the correct option is 'Maple'

Aril is present in _____________.

evs the journey of seeds vegetative propagation and seed dispersal seed dispersal seed dispersal and its methods other modes of vegetative propagation introduction to reproduction vegetative reproduction

  1. Bitter gourd

  2. Cotton

  3. Litchi

  4. Strawberry

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Correct Option: A

In lettuce, red light is most effective in breaking seed dormancy because it.

evs the journey of seeds vegetative propagation and seed dispersal seed dispersal seed dispersal and its methods other modes of vegetative propagation introduction to reproduction vegetative reproduction

  1. Stimulates water absorption

  2. Reverses inhibitory effect of far-red light

  3. Enhances respiratory rate

  4. Breaks down ABA

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Correct Option: A

Small amount of nucleolus persisting in the mature seed is known as ____________.

evs the journey of seeds vegetative propagation and seed dispersal seed dispersal seed dispersal and its methods other modes of vegetative propagation introduction to reproduction vegetative reproduction

  1. Caruncle

  2. Endosperm

  3. Perisperm

  4. Ruminate endosperm

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Correct Option: A

Which of the following pairs are correctly matched?
a. Tegmen: Part of seed coat which actually is the dried up inner integument.
b. Caruncile- A spongy outgrowth of helium and absorbs water
c. Endothelrum: Inner epidermal layer of integument in unitegmic ovules and functions similar to another tapetum
d. Epithelium: Tissue of the scutellum abutting the endosperm; glandular in nature and secretes enzymes.
Select the correct answer.

evs the journey of seeds vegetative propagation and seed dispersal seed dispersal seed dispersal and its methods other modes of vegetative propagation introduction to reproduction vegetative reproduction

  1. $1, 2$ and $3$

  2. $1, 3$ and $4$

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

  4. $2$ and $4$

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Correct Option: A

After-ripening dormancy has been reported in the seed.

evs the journey of seeds vegetative propagation and seed dispersal seed dispersal seed dispersal and its methods other modes of vegetative propagation introduction to reproduction vegetative reproduction

  1. Fraxinus excelsior

  2. Parkinsoma aculeata

  3. Pistacia lentiscus

  4. Trigonella indica

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Correct Option: A