Adaptation

Q.

How has the camel adapted itself to live in the desert?

Q.

Write a short note on migration.

Q.

How rate of appearance of New forms is linked to the life cycle or life span of organism?

Q. Is evolution a process or the result of a process?

Q. Among the following, which will have the longest loop of Henle?

1. Camel
2. Sparrow
3. Reptiles
4. Beaver

Q. Camels uses the fat stored in its hump as a reserve source of energy.

1. True
2. False

Q. The attribute of the organism (morphological, physiological, behavioural) that enables the organisms to survive and reproduce in its habitat is known as

1. Exponential growth
2. Adaptation
3. Acclimatisation
4. Mutualism

Q.

What are the types of adaptation? What are phenotypic and genotypic adaptations?

Q.

What's the difference between warning colouration, cryptic colouration, protective colouration, camouflage and mimicry?

Q.

Select the odd one out, giving reason:

1. Cactus

2. agave

3. Acacia

4. Hydrilla.

Q. Niche of a species is

1. Place of living
2. Habitat and specific functions
3. Specific functions and competitive power
4. None of the above

Q. Assertion: Presence of penumatophores is a special adaptation of hydrophytes.

Reason: Pneumatophores are positively geotropic shoots that have lenticels and help in gaseous exchange.

1. Both assertion and reason are true and reason is the correct explanation of assertion
2. Both assertion and reason are true but reason is not the correct explanation of assertion
3. Assertion is true but reason is false
4. Both assertion and reason are false

Q. Which of the following is NOT an adaptation of a desert organism?

1. Reduced leaves
2. Large ears
3. Glycolysis pathway changes
4. Sunken stomata

Q.

The number and kinds of organism is not constant. How do you explain this statement?

Q. Regarding the assertion and reason, choose the correct option:
Assertion [A]: The kangaroo rat produces highly concentrated urine and in very less quantities.
Reason [R]: Kangaroo rats live across the deserts of Arizona.

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

Q. Read the following statements (i-iii) regarding the kangaroo rat and select the option that correctly identifies the true (T) and false (F) statements.

i. They are found in the deserts of North America
ii. They have the ability to concentrate the urine due to a very short Henle’s loop
iii. Oxidation of triglycerides produces water

1. i - T, ii - F, iii - T
2. i - F, ii - T, iii - F
3. i - T, ii - T, iii - T
4. i - T, ii - F, iii - F

Q. With regard to the assertion and reason, choose the correct option.
Assertion [A]: An ability of an organism to adjust to its environment is called adaptation.
Reason [R]: Acclimatisation is when an organism adjusts to a gradual change in its environment.

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

Q.

Animals that have adapted themselves to live in deserts are known as

1. Fossorial

2. Terrestrial

3. Xerocoles

4. Arboreal

Q. Halophytes are

1. fire resistant
2. cold resistant
3. salt resistant
4. sand loving

Q.

Explain the adaptation of camels to live in the desert.

Q.

What is the most important factor for the success of animal population?

1. natality

2. adaptability

3. unlimited food

4. inter species activity

Q. The physiological adjustment of an organism to a new environmental condition is known as

1. Selection
2. Introduction
3. Adaptation
4. Acclimatization

Q. The CAM pathway is found exclusively in plants adapting to extreme cold weather conditions.

1. False
2. True

Q.

What is adaptation? What are types of adaption?

Q. Ecologist say that niche is like a species….A, while habitat is like a ….B … .
So, A and B are :

1. A – appearance; B - physiology
2. A – physiology; B - anatomy
3. A – occupation; B - address
4. A – education; B - occupation

Q.

Where is CAM seen?

Q.

Observe the living organisms in the picture and identify their habitats. Mention the characteristics that help them to adapt in these habitats.

Q.

Which one is exclusively a xerophytic adaptation?

1. Stipular leaves

2. Long tap root system

3. Spines

4. Absence of stomata

Q. The gradual physiological adjustment to slowly changing new environmental conditions is known as ___.

1. Selection
2. Introduction
3. Acclimatization
4. Quarantine

Q. Select the incorrect option with respect to the adaptations seen in organisms.

1. Desert lizard – Bask in sun and absorb heat, this is a physiological adaptation to increase the body temperature
2. Mammals in cold climate – Shorter ears and limbs to minimise the heat loss
3. Desert plants – CAM photosynthetic pathway
4. Tribes living in high altitudes of Himalayas – Higher RBC count