Biology Test 256

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Biology Test 256

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Weekly Quiz Competition

Question 1
4 / -1

Which one of the following is an exclusive character of living beings?

A
Increase in the body mass from inside only

B
Isolated metabolic reactions occurring in vitro

C
Perception of happening of events in the environment and their memory

D
Increase in mass by accumulation of material both on surface as well as internally

Solution

All living beings have the ability to perceive the happenings or events occurring in their surroundings and respond accordingly. These stimuli could be physical, chemical or biological.
Question 2
4 / -1

The economically important product sago is obtained from which part of the plant Cycas circinalis?

A
Seeds

B
Pollen grains

C
Adventitious buds

D
Pith

Solution

The starch or sago is obtained from the spongy centre or stem pith of Cycas circinalis, C. revoluta, etc. The plants are cut just before the flush of new leaves and the outermost dry stem is removed along with the fronds to prepare sago.
Question 3
4 / -1

In frog, the pharynx communicates with tympanic cavity ventrally through

A
Bidder’s canal

B
semi-circular canal

C
Eustachian tube

D
horizontal canal

Solution

The tympanic cavity in frogs is an air-filled diverticulum of the pharynx. It opens to the mouth cavity ventrally via a short, wide and permanently open Eustachian tube.
Question 4
4 / -1

Which of the following is a consumer decomposer protist?

A
Anabaena

B
Trypanosoma

C
Physarum

D
Clostridium

Solution

Many of the protist organisms are decomposers, i.e. they feed on dead or decayed organisms to fulfil their nutritional requirements. Consumer decomposer protists are slime moulds. They reside in decaying environment and possess a saprotrophic mode of nutrition, e.g. Physarum, a genus of mycetozoan slime moulds.
Question 5
4 / -1

These plants are mostly found in moist and shady places because they require the presence of water for fertilisation. Name these plants.

A
Pine

B
Cycas

C
Teak

D
Moss

Solution

Moss plants are typically found in dense green clumps often in damp, moist or shady locations. This is because mosses require water to complete their fertilisation process and to grow and function like other organisms.
Question 6
4 / -1

Secondary radial symmetry can be found in

A
Echinodermata

B
Hemichordata

C
Cephalochordata

D
Mollusca

Solution

Radial symmetry generates identical body halves around the central axis when the organism is cut. Echinoderms exhibit secondary radial symmetry after metamorphosis as full adults.
Question 7
4 / -1

The National Botanical Research Institute is located at

A
Hyderabad

B
Lucknow

C
New Delhi

D
Bangalore

Solution

National Botanical Research Institute Lucknow, Uttar Pradesh is one of the constituent research institutes of the CSIR, New Delhi. It is engaged in the classical Research and Development activities carried on the botanical prospects.
Question 8
4 / -1

If the generic and the specific names are similar in binomial nomenclature, then they are called

A
intermediate categories

B
monographs

C
tautonyms

D
clones

Solution

Tautonyms are the scientific names, in which a same word is used as the genus and species name, e.g. Rattus rattus, Gorilla gorilla, etc.
Question 9
4 / -1

The presence of a muscular diaphragm is an exclusive character of which class?

A
Mammalia

B
Reptilia

C
Aves

D
Amphibia

Solution

Diaphragm is a dome-shaped muscular partition that separates the thoracic cavity from abdomen in mammals. Due to this, mammals can breathe and utilise oxygen more efficiently than other vertebrate organisms like birds and reptiles.
Question 10
4 / -1

Choose the incorrect option.

A
Amorphophallus is the largest inflorescence.

B
Lodicules are two scale-like structures that lie at the base of the ovary of a grass flower.

C
The spadix contains a large green or coloured bracts called spathe.

D
Fruit in members of Solanaceae is pepo.

Solution

Fruits of great majority in the members of plant family Solanaceae can be a berry or capsule and very rare to be drupes.

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Re-Attempt Weekly Quiz Competition

Biology Test 256

Result

Biology Test 256

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Rank

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SHARING IS CARING

Question 1

Increase in the body mass from inside only

Isolated metabolic reactions occurring in vitro

Perception of happening of events in the environment and their memory

Increase in mass by accumulation of material both on surface as well as internally

Solution

Question 2

Seeds

Pollen grains

Adventitious buds

Pith

Solution

Question 3

Bidder’s canal

semi-circular canal

Eustachian tube

horizontal canal

Solution

Question 4

Anabaena

Trypanosoma

Physarum

Clostridium

Solution

Question 5

Pine

Cycas

Teak

Moss

Solution

Question 6

Echinodermata

Hemichordata

Cephalochordata

Mollusca

Solution

Question 7

Hyderabad

Lucknow

New Delhi

Bangalore

Solution

Question 8

intermediate categories

monographs

tautonyms

clones

Solution

Question 9

Mammalia

Reptilia

Aves

Amphibia

Solution

Question 10

Amorphophallus is the largest inflorescence.

Lodicules are two scale-like structures that lie at the base of the ovary of a grass flower.

The spadix contains a large green or coloured bracts called spathe.

Fruit in members of Solanaceae is pepo.

Solution

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