Advertisements
Advertisements
Give any four factors that favour high speciation at lower altitudes.
Concept: Levels of Biodiversity
With the help of any one example explain Alien species invasion as one of the causes of Biodiversity losses.
Concept: Loss of Biodiversity
Lever mechanism of pollination is observed in
- Salvia
- Jasmine
- Bougainvillea
- Butea
Concept: Pollination
Define vegetative propagation.
Concept: Vegetative Reproduction or Vegetative Propagation
With the help of a suitable example, explain protandry.
Concept: Pollination
Enlist advantages and disadvantages of cross pollination
Concept: Pollination
Add a note on pollination mechanism in Salvia.
Concept: Pollination
Endosperm of angiosperm is __________.
(A) haploid
(B) diploid
(C) triploid
(D) tetraploid
Concept: Endosperm
Describe the formation of helobial endosperm
Concept: Endosperm
Complete the following chart and rewrite.
| Sr.No. | Agencies | type of pollination |
| 1 | Water | .................... |
| 2 | ........................... | Entomophily |
| 3 | Bat | .................... |
| 4 | ....................... | Ornithophily |
(Or)
Explain outbreeding devices in angiospermic plants.
Concept: Pollination
Select and write the most appropriate answer from the given alternatives for the following subquestion:
A versatile anther is an adaptation for _______ type of pollination.
Concept: Pollination
Sketch and label ‘structure of a pea flower’.
Concept: Flower - a Fascinating Organ of Angiosperms
In bisexual flowers, maturation of gynoecium before androecium is known as ______.
Concept: Pollination
What is vegatative reproduction? Describe any 'three' natural methods of vegetative reproduction with examples?
Concept: Vegetative Reproduction or Vegetative Propagation >> Natural Vegetative Propagation
Very short answer type question:
Name the part of gynoecium that determines the compatible nature of pollen grain.
Concept: Pollen Pistil Interaction
Define Parthenocarpy.
Concept: Parthenocarpy
What is adventive polyembryony?
Concept: Polyembryony
What are the different adaptations shown by bird-pollinated flowers?
Concept: Pollination
Explain water pollination in detail with its types.
Concept: Pollination
Explain various categories of apomixis.
Concept: Apomixis
