Tag: interdependence of organism and the environment

Quizzes (10) Questions (19)

Questions Related to interdependence of organism and the environment

Multiple choice biology interdependence of organism and the environment natural cycles and resources constituents of air medicinal use of microorganism

State whether the following statements are true or false.
Fermentation is the process that causes your muscles to be sore after a long, strenuous workout.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In a strenuous workout, the oxygen supply to the body tissues is not received completely. To produce the necessary energy in the absence of oxygen, the pyruvate molecule at the end of glycolysis is utilised in fermentation to produce lactic acid.

The presence of lactic acid in the muscles leads to cramps and muscles to sore.
So, the correct option is 'True'.

Multiple choice biology interdependence of organism and the environment natural cycles and resources constituents of air medicinal use of microorganism

Identify correct pairs from the following.

(P) Rhizobium$\longrightarrow$ Nitrogen fixation
(Q) Clostridium$\longrightarrow$ Bakery products
(R) Penicillium$\longrightarrow$ Production of antibiotics
(S) Yeast $\longrightarrow$Food poisoning

  1. P and Q

  2. R and P

  3. S and R

  4. Q and S
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

  • Rhizobium is a nitrogen fixation bacteria found in soil.
  • Penicillium is an antibiotic used for making medicines and antibiotics.

So, the correct option is 'R and P'.

Multiple choice biology interdependence of organism and the environment natural cycles and resources constituents of air medicinal use of microorganism

Which of the following statement are correct?
A. Pyruvate can be converted into ethanol and carbon dioxide by yeast. 
B. Fermentation takes place in aerobic bacteria.
C. Fermentation takes place in mitochondria
D. Fermentation is a kind of anaerobic respiration.

  1. D only

  2. Both B and C

  3. Both A and D

  4. Both C and D
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Pyruvate is the output of glycolysis where one molecule of glucose breaks down into two molecules of pyruvate. Anaerobically, pyruvic acid is broken down to form lactate in animals and ethanol  in plants and microorganisms. In alcoholic fermentation, pyruvate from glycolysis is converted to acetaldehyde and then ethanol and carbon dioxide. Ethanol fermentation which is a biological process of converting sugars to cellular energy is performed by yeasts in the absence of oxygen. hence this is considered as a anaerobic process. 

So, the correct answer is option C.

Multiple choice biology interdependence of organism and the environment food material and source sources of food and food habits of animals forests: our lifeline

A detrivorous animal of economic importance is

  1. Caterpillar larva

  2. Leech

  3. Earthworm

  4. Giriraja fowl
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Detrivores are those animals which obtain their nourishment by consuming decomposing plant and animal parts. Earthworms decompose the organic matter of soil thus aerating it which is then used by farmers as fertilizers. Thus it improves the fertility of soil making it more porous. 

Caterpillar larva feeds on leaves.
Leech is sanguivores which means blood sucking organism.
Giriraja fowl feeds on small insects and grass.
Thus, the correct answer is option C. 

Multiple choice biology interdependence of organism and the environment food material and source sources of food and food habits of animals forests: our lifeline

Bacteria and fungi in a forest ecosystem are generally 

  1. Producers

  2. Decomposers

  3. Primary consumers

  4. Secondary consumers

  5. Tertiary consumers
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Decomposers are saprotrophs which decompose the organic remains by secreting extracellular digestive enzymes. Due to degradation of organic remains, decomposers are also called reducers. They are also known as mineralisers as they release minerals trapped in organic remains. Bacteria and fungi, in general microorganisms, are usually detrivores that feed on dead and decaying organic matter and act as decomposers.

Multiple choice biology interdependence of organism and the environment food material and source sources of food and food habits of animals forests: our lifeline

The bacteria that attack dead organic matter are

  1. Producers

  2. Herbivores

  3. Carnivores

  4. Decomposers
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Decomposers are organisms feeding on dead remains of plants and animals and excreta of animals. Decomposers are saprotrophs, which decompose the organic remains by secreting extracellular digestive enzymes. Due to degradation of organic remains, decomposers are also called as reducers. They are also known as mineralizers, as they release minerals trapped in organic remains.

Multiple choice biology interdependence of organism and the environment food material and source sources of food and food habits of animals forests: our lifeline

Microorganisms are

  1. Primary consumers

  2. Secondary consumers

  3. Tertiary consumers

  4. Decomposers
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
  • The food chain starts with energy from the sun, which is captured by plants and converted into fuel through photosynthesis. 
  • Primary consumers eat plants, and secondary and tertiary consumers feed on primary consumers. At the end of the chain, a group of micro-organisms called as decomposers carry out natural process of decomposition and form the final link in the food chain. They break down dead animals and plants and return vital nutrients to the soil.
  • So, option D is correct here.
Multiple choice biology interdependence of organism and the environment food material and source sources of food and food habits of animals forests: our lifeline

Decomposers are

  1. Autotrophs

  2. Heterotrophs

  3. Autoheterotrophs

  4. Organotrophs
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Decomposers are heterotrophs feeding on the dead and decaying matter. More specifically decomposers are saprotrophs, which decompose the organic remains by secreting extracellular digestive enzymes. Due to degradation of organic remains, decomposers are also called as reducers. They are also known as mineralizers, as they release mineral trapped in organic remains.