Distinguish between the following:
(a) Hibernation and Aestivation.
(b) Ectotherms and Endotherms
(a) Hibernation and Aestivation
Hibernation | Aestivation | ||
1. | Hibernation is a state of reduced activity in some organisms to escape cold winter conditions. | 1. | Aestivation is a state of reduced activity in some organisms to escape desiccation due to heat in summers. |
2. | Bears and squirrels inhabiting cold regions are examples of animals that hibernate during winters. | 2. | Fishes and snails are examples of organisms aestivating during summers. |
(b) Ectotherms and Endotherms
Ectotherms | Endotherms | ||
1. | Ectotherms are cold blooded animals. Their temperature varies with their surroundings. | 1. | Endotherms are warm blooded animals. They maintain a constant body temperature. |
2. | Fishes amphibians and reptiles are ectothermal animals. | 2. | Birds and mammals are endothermal animals. |
Student to attempt either option (A) or (B):
(A) How is the interaction between Ophrys and its specific bee pollinator one of the best examples of co-evolution? Explain.
OR
(B) Arrange the given important steps of decomposition in their correct order of occurrence in the breakdown of complex organic matter and explain the fourth step in the process.
Answer the following questions:
Student to attempt either option (A) or (B):
(A) Explain how the interaction between a fig tree and its tight one-to-one relationship with the pollinator species of wasp is one of the best examples of mutualism.
OR
(B) Correctly depict (also indicate the trophic level) and describe the ecological pyramid of number with 32 birds dependent on 20 insects feeding on one banyan tree.
Population interaction is generally between two different species populations.“Population interaction is the interaction between different populations. It refers to the effects that the organisms in a community have on one another.”
An ecosystem is a geographic area wherein plants, animals, and many other organisms, alongwith weather and landscape, work together to form a bubble of life.
Interactions can be beneficial or neutral or detrimental. Accordingly, there are six types of population interaction.
The different ways populations interact with each other can be summarized under the following headings.