Tag: evs

Quizzes (439) Questions (4580)

Questions Related to evs

Multiple choice 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

Which of the followig seed travels only short distance?

  1. Mango

  2. Cotton

  3. Neem

  4. Maple
Reveal answer Fill a bubble to check yourself
D Correct answer
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'

Multiple choice 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

Aril is present in _____________.

  1. Bitter gourd

  2. Cotton

  3. Litchi

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

An aril is a specialized fleshy outgrowth from the seed stalk that covers or partly covers the seed. Among the given options, litchi is well known for its prominent, edible fleshy aril. Bitter gourd possesses an aril as well, but litchi is the classic textbook example.

Multiple choice 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

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

  1. Stimulates water absorption

  2. Reverses inhibitory effect of far-red light

  3. Enhances respiratory rate

  4. Breaks down ABA
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Red light promotes germination in photoblastic seeds like lettuce by converting inactive phytochrome (Pr) into its active form (Pfr), which triggers germination. Far-red light converts Pfr back to Pr, inhibiting germination. Thus, red light breaks seed dormancy primarily by reversing the inhibitory effect of far-red light.

Multiple choice 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

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.

  1. $1, 2$ and $3$
  2. $1, 3$ and $4$
  3. $1, 2, 3$ and $4$
  4. $2$ and $4$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

All four statements accurately describe seed and ovule structures. Tegmen is the inner seed coat from the inner integument, caruncle is a spongy outgrowth near the micropyle, endothelium is the nutritive inner epidermal layer in unitegmic ovules, and epithelium is the specialized absorptive tissue of the scutellum.

Multiple choice 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

After-ripening dormancy has been reported in the seed.

  1. Fraxinus excelsior

  2. Parkinsoma aculeata

  3. Pistacia lentiscus

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

After-ripening is a period of dormancy where seeds require time after harvest to become capable of germination. Fraxinus excelsior (European ash) is a well-documented example of seeds requiring this process.

Multiple choice evs the journey of seeds vegetative propagation and seed dispersal seed dispersal seed dispersal and its methods

The seeds of ............ fruit are dry and dispersed by explosion due to the touch of our hands. 

  1. Cucumber

  2. Balsam

  3. Xanthium

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

  1. Cucumber needs insects like bees or other insects to disperse their seeds.
  2. Balsam seeds use explosion mechanism for seed dispersal.T he fruits are dry and light and easily ruptured even touch by hands.
  3. Xanthium also uses animals for seed dispersal the seed stuck to the body of animals and are very tough to remove.
  4. Calotropis widely use bees as the carrier for the dispersal of seeds.
So the correct option is  "Balsam".

Multiple choice evs the journey of seeds vegetative propagation and seed dispersal seed dispersal seed dispersal and its methods

Moringa (drum stick) seeds have .............. that aid in their dispersal.

  1. Wings

  2. Pappus

  3. Hairy tuft

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

The seeds or fruits that are dispersed by wind generally are small and light. However, there are certain other adaptions also seen in it. Moringa (drumstick) seeds have wing-like structures that aid in their dispersal. Other seeds which have similar structure are Cinchona and Pinus. Thus, the correct answer is option A.

Multiple choice evs the journey of seeds vegetative propagation and seed dispersal seed dispersal seed dispersal and its methods

The _________ seeds are dispersed by birds which consume the fruit.

  1. Dandelion

  2. Coconut

  3. Pipal

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

Pipal tree is the dwelling place of birds. The birds consuming the fruit digest the freshly part and eject the undigested seed along with the undigested matter.


Hence, the correct option is $\text{C}$