Characteristics of Living Beings

Q.

Give the life span of a dog, elephant, banana tree, horse, rose bush, rice plant, fruit fly, cow.

Q.

Who discovered virus?

Q.

What will happen if living organisms stop reproducing?

Q.

Choose the correct option.

About 98% of the mass of every living organism is composed of just six elements, which are carbon, hydrogen, nitrogen, oxygen, ___ and ___.

1. Sulphur, Magnesium

2. Magnesium, Sodium.

3. Calcium, Phosphorus

4. Phosphorus, Sulphur

Q.

What chemical element is most abundant in the human body?

Q.

Which of the following statements is incorrect regarding various infectious agents?

1. Prions consist of abnormally folded proteins.

2. Viroids lack a protein coat.

3. Viruses are obligate parasites.

4. The infective constituent in viruses is the protein coat.

Q. What do you mean by concentrated urine.

Q.

'All living things respond to external stimuli. Justify this statement with examples.

Q.

Is virus the simplest living organism?

Q.

Do Viruses ever die?

Q. List the common characteristics of all living organisms.

Q.

Respiration through gills is known as ___________ respiration.

Q. How many sense do plants have

Q.

RAM is also called as

Q.

The process of production of an organism of its own kind is termed as ___ .

Q. All living organisms produce individuals of their own kind for the survival of their species. This is called __________(reproduction/ respiration).

Q. Match the following waste with their type.

1. Household waste
2. Industrial waste
3. Biomedical waste

Q. Thick walled, highly resistant spores produced within the bacterial cells are endospores.

1. False
2. True

Q.

Which of the following is not an adaptation seen in arboreal animals?

1. Large in size

2. Claws

3. Elongated limbs

4. Low center of mass

Q. A car takes fuel, burns it to produce energy, moves and excretes smoke. Why can't we call it a living thing

Q.

Any form of response of an organism due to an external stimulus is known as

1. Respiration

2. Photosynthesis

3. Excretion

4. Digestion

Q. Define lytic and lysogenic cycle?

Q.

The organ responsible for gas exchange in a fish to take in the oxygen dissolved in water is?

1. Mouth

2. Nostril

3. Gills

4. Scales

Q.

What is a stimulus?

Q.

Over long periods of time (like thousands of years), the biotic factors undergo changes which cause the organisms undergoing adaptation.

1. True

2. False

Q. Assertion :The living state is a equilibrium steady state to be able to perform work. Reason: Living process is a constant effort to prevent falling into non-equilibrium.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect

Q. Assertion :Reproduction enables the continuity of the species generation after generation. Reason: Reproduction is a biological process in which an organism gives rise to young ones similar to itself.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect

Q. ___ is the growth of an organism which responds to a light stimulus.

Q.

Which structure in red worms helps them in grinding food?

Q.

Define special pits for dumping solid waste?