Parasitoidism

Q.

Cuscuta is an example of

1. Brood parasitism

2. Predation

3. Endoparasitism

4. Ectoparasitism

Q. Explain co-evolution with reference to parasites and their hosts. Mention any four special adaptive features evolved in parasites for their parasitic mode of life. [3]

Q. Match column I with column II and select the correct option from the codes given below:

Column I	Column II
A.Commensalism	(i) One harmed, other unaffected
B.Parasitism	(ii) One benefitted, other unaffected
C.Mutualism	(iii) Both are benefitted
D.Amensalism	(iv) One benefitted, other harmed

1. A - (iv), B - (ii), C - (iii), D - (i)
2. A - (iii), B - (iv), C - (ii), D - (i)
3. A - (ii), B - (iv), C - (iii), D - (i)
4. A - (ii), B - (iv), C - (i), D - (iii)

Q.

Cuscuta is an example ofCuscuta is an example of

1. Brood parasitism

2. Predation

3. Endoparasitism

4. Ectoparasitism

Q. Which among the following is a good example of co-evolution of host and the parasite?

1. Interaction between phytophagous insects and plants
2. Interaction between prickly pear cactus and cactus feeding moth
3. The eggs of the cuckoo bird evolved to resemble a crow's egg in size and colour
4. Tiger feeding on deer

Q. The type of host-parasite interaction that leads to the death of the host is called as ___.

Q.

Select the statement which explains best parasitism.

(a) One organism is benefited.

(b) Both the organisms are benefited.

(c) One organism is benefited, other is not affected.

(d) One organism is benefited, other is affected.

Q. Distinguish obligate parasite from facultative parasites.

Q. An orchid plant is growing on the branch of mango tree. How do you describe this interaction between the orchid and the mango tree?

Q. Parasite and host cant live without each other

1. Ectoparasite
2. Endoparasite
3. Brood parasitism
4. All the above

Q. How many of the following characteristics are correct with respect to the host infected by a parasite?

I. Reduced survival
II. Enhanced growth
III. Reduced reproductive capacity
IV. Increases population density
V. May be more vulnerable to predation

1. 2
2. 3
3. 4
4. 5

Q. Assertion :Glochidium larva rapidly disperse to a great distance. Reason: Glochidium is parasitic on fish.

1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
3. If the assertion is true but the reason is false
4. If both the assertion and reason are false

Q. The wasps lay eggs into a live caterpillar. This type of interaction is called

1. Short life span of many individuals and high birth rate
2. Long life span of many individuals and high birth rate
3. Long life span of many individuals and low birth rate
4. Short life span of many individuals and low birth rate

Q. Cercaria is the larva of

1. Schistosoma
   
2. Fasciola
3. Both A and B
4. Taenia

Q. The ability of the Venus Flytrap to capture insects is due to -

1. Rapid turgor pressure changes
2. A passive process requiring no special ability on the part of the plant
3. Specialized "muscle-like" cells
4. Chemical stimulation by the prey

Q. Which one of the following is not a parasitic adaptation?

1. Development of adhesive organs
2. Loss of digestive organs
3. Loss of reproductive capacity
4. Loss of unnecessary sense organs

Q. The type of host-parasite interaction that leads to the death of the host is called as ___.

Q. Match the following and choose the correct combination from the options given :

Population Interaction	Examples
(a) Mutualism	(1) Ticks on dogs
(b) Commensalism	(2) Balanus and Chanthamalus
(c) Parasitism	(3) Sparrow and any seed
(d) Competiton	(4) Epiphyte on a mango branch
(e) Predation	(5) Orchid, Ophrys and bee

1. (a)- 1, (b)- 5, (c)- 4, (d)- 3, (e)- 2
2. (a)- 2, (b)- 1, (c)- 5, (d)- 4, (e)- 3
3. (a)- 3, (b)- 2, (c)- 1, (d)- 5, (e)- 4
4. (a)- 4, (b)- 3, (c)- 2, (d)- 1, (e)- 5
5. (a)- 5, (b)- 4, (c)- 1, (d)- 2, (e)- 3

Q. The type of host-parasite interaction that leads to the death of the host is called as ___.

Q. The wasps lay eggs into a live caterpillar. This type of interaction is called

1. Predation
2. Parasitoidism
3. Parasitism
4. Commensalism

Q. Ecological suicide is forced to rice moth, Corcyra cepalonica by a compound extracted from

1. Chrysanthemum
2. Azadirachta
3. Eichhornia crassipes
   
4. All of the above

Q.

name two parasitic speices of plants that produce many minute seeds in a fruit?

Q. Ascaris is a specialised and not a degenerated parasite as it is

1. With a straight alimentary canal
2. Dioecious
3. Without respiratory organ
4. Covered by cuticle resistant to digestive juices of host

Q. Assertion :External parasitism is generally marked by much more extreme specialization than internal parasitism Reason: The structure of an internal parasite is usually very complex possessing suckers, reproductive organs, etc

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 :Glochidium larva rapidly disperse to a great distance. Reason: Glochindium is a parasitic worm on fish.

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. Assertion is incorrect but Reason is correct.

Q. The wasps lay eggs into a live caterpillar. This type of interaction is called

1. Predation
2. Parasitoidism
3. Parasitism
4. Commensalism