Food Web

Q.

Which is the correct food chain?

1. Grass→ Fox→ Rabbit→ Bird

2. Phytoplankton→ Zooplankton→ Fish

3. Grass→ Chameleon→ Insect → Bird

4. Fallen leaves→ Bacteria→ Insect larvae.

Q. What is used to represent all feeding relationships in an ecosystem?

Q. Which of this is secondary productivity?

1. Energy flow will be blocked
2. Herbivores will not receive solar energy
3. Mineral movement will be blocked
4. Rate of decomposition will be very high

Q.

Define food web

Q. Identify I and II, the likely organisms in the food web shown below.

1. b
2. c
3. d
4. a

Q. Assertion [A]: Food webs are formed because of complex feeding relationships among organisms.

Reason [R]: Most organisms feed at one or more trophic levels in a food chain.

1. A is true and R is false
2. Both A and R are true and R explains A
3. Both A and R are false
4. Both A and R are true but R does not explain A

Q. Which one of the following organisms is likely to show the highest concentration of DDT, once it has been introduced into the ecosystem?

1. Grasshopper
2. Toad
3. Snake
4. Cattle

Q. Which of the following does the given image represent?

1. Ecosystem
2. Food chain
3. A population
4. Food web

Q. Who am I?

1. I am the base of food chain.
2. I depend on plants for food.
3. I break down the remains of dead plants and animals.

Q. Who am I?

1. I am the base of food chain.
2. I depend on plants for food.
3. I break down the remains of dead plants and animals.

Q. What is a food chain?

Q. Very Short Answer Type Questions :
How you can define a food web ?

Q. Given figure represents two food chains (X and Y) linked together to form a food web. Identify the types of food chains X and Y and the organism A that interconnects these food chains.

1. X- Detritus food chain, Y- Grazing food chain, A- Bacterium
2. X- Detritus food chain, Y-Grazing food chain, A- Detritivore
3. X-Grazing food chain, Y-Detritus food chain, A- Grasshopper
4. X- Grazing food chain, Y-Detritus food chain, A- Detritivore

Q. An ecosystem may consist of several interrelated food chain, this interlocking pattern is known as ______

Q. A group of interconnected food chains is called

1. complex food chain
2. food web
3. food cycle
4. pyramid of biomass

Q. A ______ is the sequence of who eats whom in a biological community (an ecosystem) to obtain nutrition.

Q. The balance between producers and consumers is maintained by _____.

1. food cycle
2. scavengers
3. food chain
4. food web

Q. Study the food web given and answer the question.
Which of the following organisms in the given food web act both as a predator and a prey?

1. II, III and VI
2. II, III and IV
3. II, III, V, VI and VII
4. I, II and IV

Q. All of the interconnected and overlapping food chains in an ecosystem make up a _______

Q. Who am I?

1. I am the base of food chain.
2. I depend on plants for food.
3. I break down the remains of dead plants and animals.

Q. If phytoplanktons are destroyed in the sea then

1. It will affect the food chain.
2. No effect will be seen.
3. Primary consumers will grow luxuriantly.
4. Algae will get more space to grow.

Q. When numerous food chains link to each other in an ecosystem, it is known as ________ .

1. food cluster
2. food pyramid
3. food web
4. energy pyramid

Q.

Name the first link in all the food chains.

Q. Identify the possible link "A" in the following food chain: Plant → Insect → Frog →"A"→ Eagle

1. Rabbit
2. Snake
3. Deer
4. Dog

Q. What will happen if deer gets extinct in the food chain given below?
Grass $\to$ Deer $\to$ Tiger

1. The population of grass decreases.
2. The tiger will start eating grass.
3. The population of tiger increases.
4. The population of tiger decreases and the population of grass increases.