Living Together

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How does the availability of food influence the survival of organisms?

It provides energy for all living things to carry out essential processes. (correct)
It only affects plant species.
It has no significant impact on survival.
It limits competition among species.

What impact can disease-causing organisms have on a population?

They only affect plants, leaving animal populations unharmed.
They foster genetic diversity by acting on weak individuals.
They can enhance the population size by promoting competition.
They can cause significant decline or complete wipeout of the population. (correct)

What is a consequence of having too many predators in a habitat?

It increases the genetic diversity of the prey species.
It decreases competition for food.
It can lead to a decline in the prey population competing for resources. (correct)
It protects the habitat by controlling the population balance.

What effect does a flood have on the environment?

It can uproot plants and drown animals, disrupting the ecosystem. (C) Signup and view all the answers

How does drought affect organisms that rely on water?

It leads to the death of aquatic organisms and other water-dependent species. (B) Signup and view all the answers

Which organisms are found in the pond habitat?

Frog, Water snail, Dragonfly (C) Signup and view all the answers

What is a defining characteristic of a community as mentioned?

Populations rely on each other for survival (B) Signup and view all the answers

Which habitat would you expect to find a slug and an earthworm?

Rotting log (D) Signup and view all the answers

Which of the following organisms is NOT found in a seashore habitat?

Frog (D) Signup and view all the answers

What type of environment is leaf litter described as?

Dark, warm, and damp with low air movement (B) Signup and view all the answers

What is the definition of a population?

A group of organisms of the same kind that live together and reproduce in the same surroundings. (D) Signup and view all the answers

Which factors contribute to an increase in population size?

Higher birth rates than death rates. (C) Signup and view all the answers

How do animal populations depend on plants?

For food, oxygen, shelter, and safeguarding their young. (A) Signup and view all the answers

What leads to a decrease in population size?

Increased death rates and migration away from the surroundings. (D) Signup and view all the answers

Which of the following statements about plant populations is true?

They depend on animals for pollination, seed dispersal, and nutrient enrichment. (A) Signup and view all the answers

What is the primary function of a food web in an ecosystem?

To illustrate energy transfer and predator-prey relationships (C) Signup and view all the answers

How does a decrease in prey populations directly affect predators?

Predators will experience a decrease in their population (B) Signup and view all the answers

What is likely to happen if a new predator is introduced into a food web?

Some existing predator populations may decline due to competition (C) Signup and view all the answers

Which of the following statements about food webs is true?

Removing an organism from the food web can disrupt the balance of the ecosystem (A) Signup and view all the answers

Which sequence correctly represents a food chain in a food web?

grain → grasshopper → chicken → owl (D) Signup and view all the answers

What is the role of producers in a food chain?

They make their own food. (B) Signup and view all the answers

Which type of consumer exclusively feeds on plants?

Herbivore (C) Signup and view all the answers

In a food chain, what direction do the arrows indicate?

Flow of energy (A) Signup and view all the answers

What percentage of energy is typically passed on to the next consumer in a food chain?

10% (D) Signup and view all the answers

Which of the following organisms would be classified as a decomposer?

Fungi (D) Signup and view all the answers

Which statement accurately describes carnivores?

They exclusively eat meat. (D) Signup and view all the answers

What role do herbivores play in a food web?

They act as primary consumers. (C) Signup and view all the answers

Which statement is true regarding energy transfer in a food chain?

Most energy is lost to biological processes before reaching the next consumer. (C) Signup and view all the answers

What is included in the non-living factors of an organism's environment?

Temperature of the surroundings (B) Signup and view all the answers

How does temperature affect water availability for organisms?

Hot temperatures can lead to evaporation, reducing water availability. (D) Signup and view all the answers

Which of the following is essential for plants to carry out photosynthesis?

Light and carbon dioxide (C) Signup and view all the answers

What role does soil play in the environment of plants?

Supplies water and mineral salts to the plants. (D) Signup and view all the answers

Which statement about aquatic organisms is true?

They rely on the presence of dissolved air in their environment. (B) Signup and view all the answers

Which of the following statements is true regarding organisms and light?

Some organisms avoid light to maintain cooler temperatures. (B) Signup and view all the answers

What effect does the amount of available air have on organisms?

It is crucial for respiration and photosynthesis. (B) Signup and view all the answers

Which living factor can most directly impact the survival of a population of predators?

Availability of prey organisms (D) Signup and view all the answers

Environmental factors

All the living and non-living things that affect an organism's survival.

Non-living factors

Physical characteristics that influence organisms.