CAST Life science consolidated ridge

Front

What is a fish passage in a dam?

Back

A fish passage is a structure that allows fish to move upstream or downstream past a dam, often designed as a series of low steps or channels.

Front

Why is it important to reduce the height of water in a reservoir during fish migration?

Back

Reducing the height of water can facilitate the movement of fish, allowing them to migrate upstream to spawn.

Front

What is the significance of pack behavior in wolves?

Back

Pack behavior in wolves enhances the survival of pups, as they receive protection and care from multiple adults.

Front

How does a toxin affect the organs of the digestive and urinary systems?

Back

A toxin can damage these organs, leading to leakage of blood through tissue walls, which can cause serious health issues.

Front

What is the energy transfer in a food chain?

Back

Energy transfer in a food chain typically follows a pyramid structure, where only a fraction of energy (about 10%) is passed from one trophic level to the next.

Front

What is the role of competition in mating behavior among crickets?

Back

Competition for mates can influence mating behavior, as changes in population dynamics can shift preferences and survival strategies.

Front

What is the impact of parasitic flies on cricket mating behavior?

Back

The arrival of parasitic flies can lead to changes in mating behavior, such as a preference for males with traits that enhance survival.

Front

Define the term 'trophic level'.

Back

A trophic level is a position in a food chain or food web, representing the flow of energy and nutrients from producers to various levels of consumers.

Front

What is the primary function of the digestive system?

Back

The primary function of the digestive system is to break down food into nutrients that can be absorbed into the bloodstream.

Front

Explain the concept of osmotic pressure in relation to toxins.

Back

Osmotic pressure can cause fluids to move out of blood vessels, leading to increased fluid output in organ systems affected by toxins.