Coevolution

Q. Match the items in Column-I with those in Column-II:

	Column - I		Column - II
(a)	Herbivores-Plants	(i)	Commensalism
(b)	Mycorrhiza-Plants	(ii)	Mutualism
(c)	Sheep-Cattle	(iii)	Predation
(d)	Orchid-Tree	(iv)	Competition

Select the correct option from the following:

1. (a)-(iv), (b)-(ii), (c)-(i), (d)-(iii)
2. (a)-(iii), (b)-(ii), (c)-(iv), (d)-(i)
3. (a)-(ii), (b)-(i), (c)-(iii), (d)-(iv)
4. (a)-(i), (b)-(iii), (c)-(iv), (d)-(ii)

Q.

What Is parasitic castration?

Q. Which of the following are examples of coevolution?

1. Number of deer increasing with increase in grassland
2. Clownfish being immune to the neurotoxin of Sea anemone
3. Plants producing digestion-resistant seeds to ensure propagation even after getting eaten
4. Giraffes having a longer neck to reach tall trees

Q. ___(i)_____employs ‘sexual deceit’ to get pollination done by a species of__(ii)__.

1. (i)- Ophrys, (ii)-wasp
2. (i)- Fig plant, (ii)-wasp
3. (i)- Fig plant, (ii)-bee
4. (i)- Ophrys, (ii)-bee

Q.

Choose the correct statements:

1. The Mediterranean orchid employs ‘sexual deceit’ to get pollination done by a species of bee.

2. One petal of its flower bears a strange resemblance to the male bee in size, color and markings.

3. The female bee is attracted to what it perceives as a male.

4. Both b and c

Q. Which of the following plant do not offer reward and employs sexual deceit to get pollination done by a species of bee?

1. Mediterranean orchid
2. Ophrys species
3. Both a and b
4. Pronuba

Q. 'Sexual deceit' is employed by:

1. Figs
2. Orchid
3. Yucca
4. Pinus

Q. An interesting modification of flower shape for insect pollination occurs in some orchids in which a male insect mistakes the pattern on the orchid flower for the female species and tries to copulate with it, thereby pollinating the flower. This phenomenon is called

1. pseudopollination
2. pseudoparthenocarpy
3. polygamy
4. pseudocopulation

Q. The changes in genetic composition of one species reciprocally affecting another species is known as .

1. adaptation
2. co-evolution
3. evolution
4. commensalism

Q. Mongoose is one animal that is known to prey on snakes. The snake puts up a resistance to the attack and uses venom against them. However, mongoose has developed immunity against snake venom. Even the strongest venom merely puts the mongoose to sleep, where it digests the venom. This kind of adaptation is called coevolution.

1. True
2. False

Q.

If the stronger partner is benefitted and the weaker partner is harmed, it is known as

1. Symbiosis

2. Commensalism

3. Predation

4. Allelopathy

Q. Which of the following are examples of coevolution?

1. Number of deer increasing with increase in grassland
2. Clownfish being immune to the neurotoxin of Sea anemone
3. Plants producing digestion-resistant seeds to ensure propagation even after getting eaten
4. Giraffes having a longer neck to reach tall trees

Q.

Thorns are the most common morphological means of defense in:

1. Acacia

2. Cactus

3. Both cactus and acacia

4. None of the above

Q. Assertion : Insects visit flowers the gather honey.
Reason : Attraction of flowers prevents the insects from damaging other parts of the plant.

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

Q.

Nature of defence mechanism in plants like Acacia and Cactus (Opuntia) is

1. physiological

2. morphological

3. biochemical

4. anatomical

Q. The get cross-pollinated by a species of bees, the Mediterranean orchid Ophrys employs

1. Diapause
2. Camouflage
3. Psuedocopulation
4. Sexual deceit

Q.

A snake kills its food by using venom, the venom circulates in the whole body of that killed animal. The snakes eat that animal, why isnt the snake affected by the venom in the body parts of the animal it eats?

Q.

Where Can Parasite Castration Be Seen?

Q. Mongoose is one animal that is known to prey on snakes. The snake puts up a resistance to the attack and uses venom against them. However, mongoose has developed immunity against snake venom. Even the strongest venom merely puts the mongoose to sleep, where it digests the venom. This kind of adaptation is called coevolution.

1. True
2. False

Q. The egg of cockroach is

1. Isolecithal
2. Telolecithal
3. Microlecithal
4. None of the above

Q.

How does the Mediterranean orchid Ophrys ensure its pollination by bees?

Q. The changes in genetic composition of one species reciprocally affecting another species is known as .

1. adaptation
2. co-evolution
3. evolution
4. commensalism

Q. Poison sting is found in the

1. Carcharodon
2. Pristis
3. Trygon
4. Torpedo

Q. In which of the following animals, snake venom is not effective?

1. Lizard
2. Jackal
3. Rat
4. Mangoose

Q.

Thorns are the most common morphological means of defense in:

1. Acacia

2. both

3. Cactus

4. none

Q. Brightly coloured scented flowers generally show

1. Entomophily
2. Malacophily
3. Myrmecophily
4. Chiropterophily

Q. Animals have the innate ability to escape from predation. Examples for the same are given below. Select the incorrect example.

1. Enlargement of body size by swallowing air in puffer fish
2. Melanism in moths
3. Poison fangs in snakes
4. Colour changes in chameleon