Biology Test

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Biology Test - 32

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Weekly Quiz Competition

Question 1
1 / -0

Water will move from the root hairs through cortex, if the water potentials are:

A

Root hairs = 0; Cortex = –1, Xylem = –2

B

Root hairs = 0; Cortex = 0, Xylem = 0

C

Root hairs = –2; Cortex = –1, Xylem = 0

D

Root hairs = 0; Cortex = +1, Xylem = +2
Question 2
1 / -0

Lianas occur more commonly in

A

Deserts

B

Temperate forests

C

Tropical forests

D

Alpine vegetation
Question 3
1 / -0

The true statement about ‘greenhouse effect’ is that it is

A

caused only by CO₂

B

caused by CO₂, CFCs, CH₄ and NO₂ gases

C

caused by combination of many gases

D

None of these
Question 4
1 / -0

Entamoeba histolytica differs from Amoeba in absence of

A

contractile vacuole

B

pseudopodia

C

nucleus

D

ectoplasm
Question 5
1 / -0

The enzyme that helps to cut one strand of DNA duplex to release tension of coiling of two strands is

A

DNA polymerase I

B

topo-isomerase

C

DNA ligase

D

swielase (helicase or unwindase)
Question 6
1 / -0

Which of the following nephridia are not found in earthworms?

A

Pharyngeal nephridia

B

Septal nephridia

C

Integumentary nephridia

D

Macro nephridia
Question 7
1 / -0

The part of Earth in which life exists is known as

A

biosphere

B

atmosphere

C

lithosphere

D

hydrosphere
Question 8
1 / -0

Pick the correctly matched option from among the following with respect to different shapes and sizes of the chloroplasts:(1) Ulothrix - (A) Reticulate chloroplast(2) Zygnema - (B) Ribbon like chloroplast(3) Oedogonium - (C) Cup shaped chloroplast(4) Spirogyra - (D) Collar like chloroplast(5) Chlamydomonas - (E) Stellate chloroplast

A

(1) - (D), (2) - (A), (3) - (E), (4) - (C), (5) - (B)

B

(1) - (C), (2) - (A), (3) - (B), (4) - (D), (5) - (E)

C

(1) - (D), (2) - (E), (3) - (A), (4) - (B), (5) - (C)

D

(1) - (D), (2) - (B), (3) - (E), (4) - (C), (5) - (A)
Question 9
1 / -0

An obligate parasite is one which

A

always requires a living host

B

is usually a saprophyte but can become a parasite

C

always requires dead organic matter to survive

D

is usually a parasite but can become a saprophyte
Question 10
1 / -0

The inflorescence of family–Poaceae is

A

spike

B

spikelet

C

raceme

D

capitulum

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Biology Test - 32

Result

Biology Test - 32

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SHARING IS CARING

Question 1

Root hairs = 0; Cortex = –1, Xylem = –2

Root hairs = 0; Cortex = 0, Xylem = 0

Root hairs = –2; Cortex = –1, Xylem = 0

Root hairs = 0; Cortex = +1, Xylem = +2

Question 2

Deserts

Temperate forests

Tropical forests

Alpine vegetation

Question 3

caused only by CO₂

caused by CO₂, CFCs, CH₄ and NO₂ gases

caused by combination of many gases

None of these

Question 4

contractile vacuole

pseudopodia

nucleus

ectoplasm

Question 5

DNA polymerase I

topo-isomerase

DNA ligase

swielase (helicase or unwindase)

Question 6

Pharyngeal nephridia

Septal nephridia

Integumentary nephridia

Macro nephridia

Question 7

biosphere

atmosphere

lithosphere

hydrosphere

Question 8

(1) - (D), (2) - (A), (3) - (E), (4) - (C), (5) - (B)

(1) - (C), (2) - (A), (3) - (B), (4) - (D), (5) - (E)

(1) - (D), (2) - (E), (3) - (A), (4) - (B), (5) - (C)

(1) - (D), (2) - (B), (3) - (E), (4) - (C), (5) - (A)

Question 9

always requires a living host

is usually a saprophyte but can become a parasite

always requires dead organic matter to survive

is usually a parasite but can become a saprophyte

Question 10

spike

spikelet

raceme

capitulum

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