Q. 44.2( 5 Votes )
What are various agents of pollination?
Pollinators could be,
a) Biotic pollinators: - These include living organisms such as animals, insects, and humans.
b) Abiotic pollinators: - These include non-living vectors or natural carriers such as wind, water, gravity, fire etc.
Rate this question :
Draw a neat diagram of fate of pollen after landing on stigma. Also, label the following parts.
(i) Female germ cell
(ii) Pollen tube
(iii) Pollen grain
(iv) Male germ cellAll In One Science
What is meant by pollination? What are its two type? What are the agents which help in pollination?Evergreen Science
Differentiate between plumule and radical.Science Lab Manual
When an insect sits on the flower of a plant then some particles A present in the top of little stalks in the flower attach to its body hair. When this insect now sits on the flower of another similar plant, then particles A attached to the hair of insect are put on the top of a flask-shaped organ at the centre of flower. The particle A grows a long tube B from the top of flask-shaped organ through which C moves down and reaches the bottom part of flask-shaped organ. Here C fuses with the nucleus of D contained in structure E. The fusion of C and D forms a new cell F which grows and develops into a seed of the plant.
(a) What are particles A ? What is the process of transferring A from one flower to another flower of similar plant by the insect known as ?
(b) What is the name of tube B?
(c) What is C which moves down through the tube B?
(d) Name D and E.
(e) What is F ?Lakhmir Singh & Manjit Kaur- Biology
In what ways is fertilisation in a plant :
(a) similar to fertilisation in a human?
(b) different from fertilisation in a human?Lakhmir Singh & Manjit Kaur- Biology