Online GK Test

GK Test
 

Question: Pine, fir, spruce, cedar, larch and cypress are the famous timber-yielding plants of which several

1

angiosperms

2

gymnosperms

3

monocotyledons

4

dicotyledons

View Answer

Correct Answer: 2

Question: Pollination is best defined as

1

transfer of pollen from anther to stigma

2

germination of pollen grains

3

growth of pollen tube in ovule

4

visiting flowers by insects

View Answer

Correct Answer: 1

Question: Plants receive their nutrients mainly from

1

chlorophyll

2

atmosphere

3

light

4

soil

View Answer

Correct Answer: 4

Question: Plants synthesis protein from

1

starch

2

sugar

3

amino acids

4

fatty acids

View Answer

Correct Answer: 3

Question: Plants absorb dissolved nitrates from soil and convert them into

1

free nitrogen

2

urea

3

ammonia

4

proteins

View Answer

Correct Answer: 1

Question: Out of 900 reported species of living gymnosperms, conifers are represented

1

all gymnosperms, except conifers

2

only angiosperms

3

only conifers

4

angiosperms and all gymnosperms except conifers

View Answer

Correct Answer: 3

Question: One of the following is not a function of bones.

1

Place for muscle attachment

2

Protection of vital organs

3

Secretion of hormones for calcium regulation in blood and bones

4

Production of blood corpuscles

View Answer

Correct Answer: 3

Question: Radical vascular bundles are those in which

1

xylem is surrounded by phloem

2

phloem is surrounded by xylem

3

xylem and phloem occur on the same radius

4

xylem and phloem occur on the different radii

View Answer

Correct Answer: 4

Question: Monotremes are unique mammals because they

1

posses hair

2

give birth to live young

3

secret milk in a pouch

4

lay eggs

View Answer

Correct Answer: 4

Question: Poison glands of snakes are homologous to

1

electric organs of fishes

2

stings of rays

3

sebaceous glands of mammals

4

salivary glands of vertebrates

View Answer

Correct Answer: 4

Question: Plant bends towards the source of light on account of the movement of curvature known as

1

geotropism

2

thigmotropism

3

chemotropism

4

phototropism

View Answer

Correct Answer: 4

Question: Plant have while animals lack it.

1

starch

2

cellulose

3

protein

4

fat

View Answer

Correct Answer: 2

Question: Osmosis is the flow of solution from higher concentration to a solution of lower concentration throu

1

Exact concentration of solution is not given

2

Character of semi permeable membrane is not given

3

The flow of solution is not possible through semi permeable membrane

4

All are incorrect

View Answer

Correct Answer: 3

Question: Monocot root differs from dicot root in having

1

open vascular bundles

2

scattered vascular bundles

3

well developed pith

4

radially arranged vascular bundles

View Answer

Correct Answer: 3

Question: Oxyreductases, transferases, hydrolases, lyases, isomerases and ligases are all classes of

1

hormones

2

enzymes

3

proteins

4

vitamins

View Answer

Correct Answer: 2

Question: Ptyalin is an enzyme produced in the

1

salivary glands

2

pituitary glands

3

thyroid glands

4

pancreas

View Answer

Correct Answer: 1

Question: Mycobacterium leprae causes leprosy, Corynebacterium diphtheria causes diphtheria and Vibrio comma c

1

tetanus

2

influenza

3

cholera

4

typhoid

View Answer

Correct Answer: 3

Question: Pollination by wind is called

1

anemophily

2

hydrophily

3

zoophily

4

entomophily

View Answer

Correct Answer: 1

Question: Pollen grains in plants are produced in

1

roots

2

leaves

3

flower

4

stem

View Answer

Correct Answer: 3

Question: Nitrogen is fixed in ecosystems in ways stated below. Which one of the statements below is false?

1

By cyanobacteria

2

By electrical discharges in the atmosphere

3

By industrially synthesised fertilizer

4

By denitrification

View Answer

Correct Answer: 4

Question: Photosynthesis generally takes place in which parts of the plant?

1

Leaf and other chloroplast bearing plants

2

steam and leaf

3

Roots and chloroplast bearing plants

4

Bark and leaf

View Answer

Correct Answer: 1

Question: Most fish do not sink in water because of the presence of

1

swim bladder

2

air bladder

3

air sacs

4

air in spongy bones

View Answer

Correct Answer: 1

Question: Plants absorb most part of water needed by them through their

1

embryonic zone

2

growing point

3

root hairs

4

zone of elongation

View Answer

Correct Answer: 3

Question: Ordinary table salt is sodium chloride. What is baking soda?

1

Potassium chloride

2

Potassium carbonate

3

Potassium hydroxide

4

Sodium bicarbonate

View Answer

Correct Answer: 4

Question: Movement of cell against concentration gradient is called

1

osmosis

2

active transport

3

diffusion

4

passive transport

View Answer

Correct Answer: 2

Question: Photosynthesis takes place faster in

1

yellow light

2

white light

3

red light

4

darkness

View Answer

Correct Answer: 2

Question: Nucleus, the genetic material containing rounded body in each cell, was first discovered in 1831 by

1

Robert Hooke

2

Robert Brown

3

Rudolf Virchow

4

Theodore Schwann

View Answer

Correct Answer: 2

Question: Other than spreading malaria, anopheles mosquitoes are also vectors of

1

dengue fever

2

filariasis

3

encephalitis

4

yellow fever

View Answer

Correct Answer: 2

Question: Photo-oxidation is

1

photorespiration

2

photolysis

3

light and oxygen induced breakdown

4

All of the above

View Answer

Correct Answer: 4

Question: Process of cell division can take place by

1

heterosis

2

fusion

3

mitosis

4

None of these

View Answer

Correct Answer: 3

Question: Plant development is influenced by

1

quality of light only

2

quality and quantity of light

3

quality and duration of light

4

quality, quantity and duration of light

View Answer

Correct Answer: 4

Question: Most highly intelligent mammals are

1

whales

2

dolphins

3

elephants

4

kangaroos

View Answer

Correct Answer: 2

Question: Prokaryotic cells lack

1

nucleolus

2

nuclear membrane

3

membrane bound by organelles

4

All of these

View Answer

Correct Answer: 4

Question: Primary phloem develops from

1

lateral meristem

2

protoderm

3

extrastelar cambium

4

provascular tissue

View Answer

Correct Answer: 4

Question: Plants that grow in saline water are called

1

halophytes

2

hydrophytes

3

mesophytes

4

thallophytes

View Answer

Correct Answer: 1

Question: Pyorrhoea is a disease of the

1

nose

2

gums

3

heart

4

lungs

View Answer

Correct Answer: 2

Question: out of proteins, lipids and carbohydrates present in a cell membrane, what is true?

1

Lipids are maximum

2

Carbohydrates are minimum

3

Carbohydrates are maximum

4

All three are in equal proportion

View Answer

Correct Answer: 2

Question: Potato is a modified form (outgrowth) of

1

root

2

stem

3

fruit

4

leaf

View Answer

Correct Answer: 2

Question: Of the following taxonomic categories which is the most inclusive (i.e. is the highest in hierarchy)

1

Order

2

Subspecies

3

Class

4

Genus

View Answer

Correct Answer: 3

Question: Prothrombin which helps in clotting of blood is released by

1

lymphocytes

2

erythrocytes

3

monocytes

4

blood platelets

View Answer

Correct Answer: 4

Question: Myopia is connected with

1

ears

2

eyes

3

lungs

4

None of these

View Answer

Correct Answer: 2

Question: Most of the red, blue and purple colours of plants are due to a pigment called

1

anthocyanin

2

carotene

3

chlorophyll

4

xanthophylls

View Answer

Correct Answer: 1

Question: Photosynthesis is a process

1

reductive and exergonic

2

reductive and catabolic

3

reductive, endergonic and catabolic

4

reductive, endergonic and anabolic

View Answer

Correct Answer: 4

Question: Pigmentation of skin is due to

1

lymphocytes

2

monocytes

3

leucocytes

4

melanocytes

View Answer

Correct Answer: 4

Question: Night blindness is cause by lack of which vitamin?

1

Vitamin A

2

Vitamin B

3

Vitamin C

4

Vitamin D

View Answer

Correct Answer: 1

Question: On which of the following plants did Gregor Mendal perform his classical experiment?

1

Gram

2

Maize

3

Pea

4

Wheat

View Answer

Correct Answer: 3

Question: Norepinephrine increases

1

respiration

2

urine production

3

saliva production

4

blood pressure

View Answer

Correct Answer: 4

Question: One of the following is most suitable for study of mutations

1

Haploids

2

Diploids

3

Tetraploids

4

Polyploid

View Answer

Correct Answer: 1

Question: Pulses are a good source of

1

carbohydrates

2

fats

3

proteins

4

vitamins

View Answer

Correct Answer: 3

Question: Oxygen in our blood is transported by a protein named

1

haemoglobin

2

keratin

3

collagen

4

myoglobin

View Answer

Correct Answer: 1

Question: One day you wake with a sore throat and a runny nose. Your doctor takes a swab from your throat

1

Having waited a day, it is too late to take an antibiotic

2

You need an antiseptic, not an antibiotic

3

You need to be vaccinated instead of taking an antibiotic

4

You are infected by a virus

View Answer

Correct Answer: 4

Question: Plants that grow under average temperature and moisture are called

1

halophytes

2

hydrophytes

3

mesophytes

4

xerophytes

View Answer

Correct Answer: 3

Question: Plants developing in dry conditions are

1

xerophytes

2

mesophytes

3

lithophytes

4

hydrophytes

View Answer

Correct Answer: 1

Question: Plants growing on sand are called as

1

chasmophytes

2

oxylophytes

3

lithophytes

4

psammophytes

View Answer

Correct Answer: 4

Question: Our skin, when exposed to excess sunlight, becomes dark. This is because our skin pigments called

1

flavoxanthin

2

melanin

3

carotene

4

Xanthophyll

View Answer

Correct Answer: 2

Question: Normal adult human male has

1

10 gram of haemoglobin/100 gram of blood

2

14 gram of haemoglobin/100 gram of blood

3

18 gram of haemoglobin/100 gram of blood

4

24 gram of haemoglobin/100 gram of blood

View Answer

Correct Answer: 2

Question: Plants wilt due to excess of

1

transpiration

2

photosynthesis

3

photosynthesis

4

None of these

View Answer

Correct Answer: 1

Question: Nymph is the name of young one of

1

butterfly

2

beetle

3

housefly

4

cockroach

View Answer

Correct Answer: 4

Question: Mutation is

1

a factor responsible for plant growth

2

a change which affects the offspring of F2 generation only

3

a change that is inherited

4

a change which affects the parents

View Answer

Correct Answer: 3

Question: Placenta is the structure formed

1

by the union of foetal and uterine tissue

2

by foetus only

3

by fusion of germ layers

4

None of these

View Answer

Correct Answer: 1

Question: N2 content is kept constant in the biosphere due to

1

N2 fixation

2

industrial pollution

3

nitrogen cycle

4

absorption of N2

View Answer

Correct Answer: 3

Question: O2 released in the process of photosynthesis comes from

1

CO2

2

water

3

sugar

4

pyruvic acid

View Answer

Correct Answer: 2

Question: Plants hormone that induces cell division is

1

auxins

2

gibberellins

3

kinins

4

domins

View Answer

Correct Answer: 3

Question: Neurospora is used as genetic material because

1

it has short life cycle of 10 days

2

the product of single meiosis can be easily analysed

3

meiotic products are linearly arranged in the form of ordered tetrads

4

is a diploid fungus

View Answer

Correct Answer: 1

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