Tag: seed dispersal and its methods

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Questions Related to seed dispersal and its methods

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 $\text{C}$

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

Dispersal of seed in Opium or Poppy/Argemone occurs by

  1. Explosive mechanism

  2. Parachute mechanism

  3. Censer mechanism

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

Dispersal of seeds in poppy occurs by censer mechanism. In this mechanism, the seeds are scattered after dehiscence of fruit occur when it is shaken by the wind. 

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

The seeds of poppy are dispersed by

  1. Wind

  2. Animals

  3. Water

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

In pollination, pollinators play a major role and different plants adopt different methods to pollinate themselves.

  1. By wind also called anemophily and is used by around 19% of plants. Ex poppy and palm.
  2. By animals also called zoophily in which various animals mainly insects help in pollination and get a reward for this. Majority of plant use this method around 80%.ex Sunflower (by bees), potato (by bumblebees).
  3. By water also called as hydrophily and is not used as much only 0.4 % of plant favored it. Ex Vallisneria.
  4. Explosion mechanism occurs when the triggering agent come in contact and is a violent explosion in which either only anther or both anther and stigma burst to release pollen. Ex Lamiaceae family.
So the correct option is "Wind".

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

Which of the following is a seed borne disease

  1. Bacterial blight of rice

  2. Kharia of paddy

  3. Whiptail of Brassica

  4. All of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Bacterial blight of rice is a seed borne disease which is transmitted to paddy. Seedlings when raised under high humid conditions. This disease is caused by Xanthomonas oryzae.

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

Which of the following is correct chronological order of the division taking place through an apical or embryo cell to a sixteen cell stage?

  1. Vertical division $\rightarrow$ Transverse division $\rightarrow$ Division at right angles to both the previous divisions $\rightarrow$ periclinal division
  2. Vertical division $\rightarrow$ Vertical division at right angles to the first division $\rightarrow$ Division at right angles to both the previous divisions $\rightarrow$ Periclinal divisions
  3. Vertical division $\rightarrow$ Transverse division $\rightarrow$ Periclinal division
  4. Vertical division $\rightarrow$ Vertical division at right angles to the first divisions $\rightarrow$ Transverse division $\rightarrow$ Periclinal division
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The development of the proembryo typically follows a specific sequence: initial vertical divisions, followed by transverse divisions, and then periclinal divisions to differentiate the layers.