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781.

Aquaculture is the
(a)Loss of water by plants
(b)Use of water for farming
(c)Water content of organisms
(d)Water portion of the biosphere
Comment
Answer is: B

782.

The earliest human who practised crude surgery, kept records, created some art, and conducted formal burial rites were
(a)Homo erectus
(b)Early Homo sapiens
(c)Neanderthal man
(d)Cro-Magnon man
Comment
Answer is: C

783.

Taiga represents
(a)A genus of tiger facing extinction
(b)A fossil of an extinct species of tiger
(c)The treeless ground bordering the Arctic ocean
(d)Coniferous forests
Comment
Answer is: D

784.

In a very hot climate, one is likely to find
(a)Organisms capable of aestivation
(b)Short-tailed deer
(c)Organisms capable of hibernation
(d)Coke machines
Comment
Answer is: A

785.

Snakes and vultures are eating rats in a field. If wild dogs are let into the field the immediate result will be a
(a)Decrease in the number of rats
(b)Decrease in the number of vultures
(c)Increase in the number of snakes
(d)Decrease in the number of snakes
Comment
Answer is: B

786.

Which of the following cells/structures are excretory in function?
1. Malpighian tubules
2. Flame cells
3. Amoeboid coelomocytes
4. Chlorogogen cells
(a)1, 2
(b)2, 3
(c)1, 2, 3
(d)1, 2, 3, 4
Comment
Answer is: D

787.

Radiocarbon dating is used to find the age of
(a)Fossils
(b)Buildings
(c)Babies
(d)Rocks
Comment
Answer is: A

788.

The mutation theory of evolution was proposed by
(a)Lamarck
(b)Mendel
(c)Darwin
(d)None of these
Comment
Answer is: D

789.

Palaeontology is the study of
(a)Bones
(b)Birds
(c)Primates
(d)Fossils
Comment
Answer is: D

790.

The Lamarckian theory of organic evolution is usually known as the theory of
(a)Natural selection
(b)Continuity of germplasm
(c)Descent with change
(d)Inheritance of acquired characters
Comment
Answer is: D

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