Q. No.In a growing population of a country:
1.
Reproductive and pre-reproductive individuals are equal in number.
2.
Reproductive individuals are less than post-reproductive individuals.
3.
Pre-reproductive individuals are more than reproductive individuals.
4.
Pre-reproductive individuals are less than reproductive individuals.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
A keystone species is the one which has
1. A small proportion of total biomass but has huge impact on community’s organisation and survival
2.A plenty of biomass but low impacts on community’s organisation
3. A rare species with little impact on biomass and other species in the community
4. A dominant species which has a large proportion of biomass and which affects many other species
A system of rotating crops with legume or grass pastures to improve soil structure and fertility is called:
1. Shifting agriculture
2. Ley farming
3. Contour farming
4. Strip farming
It is much easier for a small animal to run uphill than for a large animal, because:
1. The efficiency of muscles in large animals is less than in the small animals.
2. It is easier to carry a small body weight.
3. Smaller animals have a higher metabolic rate.
4. Small animals have a lower requirement.
Which one of the following characteristics is not shared by birds and mammals?
1. Warm blooded nature
2. Ossified endoskeleton
3. Breathing using lungs
4. Viviparity
Plants which produce characteristic Pneumatophores and show vivipary belong to
1. Mesophytes
2. halophytes
3. Psammophytes
4. Hydrophytes
Who is revered as the father of ecology in India?
1. Gurdev Singh Khush
2. Ramdeo Mishra
3. Panchanan Maheshwari
4. Jawahar Sharma
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Ecology at the organismic level is essentially:
1. Physiological ecology
2. Biochemical ecology
3. Anatomical ecology
4. Pathological ecology
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
The biome characterized by a mean annual temperature between 0C and 25C and mean annual precipitation between 25 cm and 100 cm is:
1. Desert
2. Arctic and alpine tundra
3. Temperate forest
4. Grassland
Identify the biome that is not correctly matched with the physical parameters given in corresponding Column II and Column III:
|
Biome |
Mean annual temperature [OC] |
Mean annual precipitation [cm] |
|
|
1. |
Tropical forest |
20 – 25 |
130 – 430 |
|
2. |
Arctic and alpine tundra |
-12 – 2 |
10 – 125 |
|
3. |
Coniferous forest |
-5 –5 |
100 – 200 |
|
4. |
Temperate forest |
8 – 22 |
50 – 225 |
© 2024 GoodEd Technologies Pvt. Ltd.