[MCQ]Biology MCQs For WBCS Exam||SET 22

 

 Biology MCQs For WBCS Exam

WBCS BIOLOGY MCQ Q1. 

Mechanical tissues are very poorly developed in

(a) xerophytes

(b) halophytes

(c) hydrophytes

(d) lithophytes

Ans. (c)

WBCS BIOLOGY MCQ Q2. 

Desert can be converted into green land by

(a) halophytes

(b) psammophytes

(c) tropical trees

(d) oxylophytes

Ans. (b)

WBCS BIOLOGY MCQ Q3. 

Mangrove plants show vivipary. This is —

(a) germination of seeds within fruits while still attached to parent plant

(b) germination of seeds in fruits on the soil

(c) germination of seeds within fruit on sterile artificial culture medium

(d) germination of seeds only after dispersal of fruits

Ans. (a)

WBCS BIOLOGY MCQ Q4. 

Among the following, which plant is completely devoid of roots?

(a) Ceratophyllum

(b) Hydrilla

(c) Vallisneria

(d) Azolla

Ans. (a)

WBCS BIOLOGY MCQ Q5. 

What is the name given for an association of two species where one is benefited and

other remains unaffected or unharmed?

(a) Parasitism

(b) Symbiosis

(c) Commensalism

(d) Predation

Ans. (c)

WBCS BIOLOGY MCQ Q6. 

Occurrence of Zoochlorellae in the body wall of Hydra is an example of

(a) a predation

(b) a food chain involving a parasite

(c) commensalism

(d) mutualism

Ans. (d)

WBCS BIOLOGY MCQ Q7. 

Which one of the following is a protective device?

(a) Competition

(c) Camouflage

(c) Commensalism

(d) Symbiosis

Ans. (b)

WBCS BIOLOGY MCQ Q8. 

What is the sequence of species through which the organic molecules in a community

pass called?

(a) Pyramid of energy

(b) Nutrient cycle

(c) Food web

(d) Food chain

Ans. (d)

WBCS BIOLOGY MCQ Q9.

 A food chain consists of

(a) producers and primary consumers

(b) producers, herbivores and carnivores

(c) producers, consumers and decomposers

(d) producers, carnivores and decomposers

Ans. (c)

WBCS BIOLOGY MCQ Q10. 

Which of the following is the correct sequence in food chain?

(a) Fallen leaves bacteria insect larvae birds

(b) Phytoplankton zooplankton fish

(c) Grasses fox rabbit

(d) Grasses chameleon insects birds

Ans. (b)

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⚡BIOLOGY MCQs SET 21[PREV]

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