BIOLOGY - 02 (LEE EDUTEK PRIVATE LIMITED PH NO 9704875189)

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QUIZFOR BIOLOGY

Ramapithecus and Cro-Magnon man are considered

1 point

ancestors of modern man

ancestors of monkey

ancestors of lion

None of the above

Clear selection

Poison glands of snakes are homologous to

1 point

electric organs of fishes

stings of rays

sebaceous glands of mammals

salivary glands of vertebrates

Clear selection

Radical vascular bundles are those in which

1 point

xylem is surrounded by phloem

phloem is surrounded by xylem

xylem and phloem occur on the same radius

xylem and phloem occur on the different radii

Clear selection

Neurospora is used as genetic material because

1 point

it has short life cycle of 10 days

the product of single meiosis can be easily analysed

meiotic products are linearly arranged in the form of ordered tetrads

is a diploid fungus

Clear selection

Plants wilt due to excess of

1 point

transpiration

photosynthesis

absorption

None of these

Clear selection

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

1 point

Lipids are maximum

Carbohydrates are minimum

Carbohydrates are maximum

All three are in equal proportion

Clear selection

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

1 point

anthocyanin

carotene

chlorophyll

xanthophylls

Clear selection

Normal adult human male has

1 point

10 gram of haemoglobin/100 gram of blood

14 gram of haemoglobin/100 gram of blood

18 gram of haemoglobin/100 gram of blood

24 gram of haemoglobin/100 gram of blood

Clear selection

Placenta is the structure formed

1 point

by the union of foetal and uterine tissue

by foetus only

by fusion of germ layers

None of these

Clear selection

Plants hormone that induces cell division is

1 point

auxins

gibberellins

kinins

domins

Clear selection

Plants developing in dry conditions are

1 point

xerophytes

mesophytes

lithophytes

hydrophytes

Clear selection

Plant have ____ while animals lack it.

1 point

starch

cellulose

protein

fat

Clear selection

Potato is a modified form (outgrowth) of

1 point

root

stem

fruit

leaf

Clear selection

Phloem is a tissue found in

1 point

reproductive organs of animals

plants

insects

mammals

Clear selection

Plants growing on sand are called as

1 point

chasmophytes

oxylophytes

lithophytes

psammophytes

Clear selection

Monotremes are unique mammals because they

1 point

posses hair

give birth to live young

secret milk in a pouch

lay eggs

Clear selection

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

1 point

geotropism

thigmotropism

chemotropism

phototropism

Clear selection

Osmosis is the flow of solution from higher concentration to a solution of lower concentration through a semi permeable membrane. What is incorrect in this statement?

1 point

Exact concentration of solution is not given

Character of semi permeable membrane is not given

The flow of solution is not possible through semi permeable membrane

All are incorrect

Clear selection

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

1 point

Order

Subspecies

Class

Genus

Clear selection

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

1 point

Gram

Maize

Pea

Wheat

Clear selection

Myopia is connected with

1 point

ears

eyes

lungs

None of these

Clear selection

Photosynthesis is a process

1 point

reductive and exergonic

reductive and catabolic

reductive, endergonic and catabolic

reductive, endergonic and anabolic

Clear selection

1 point

Option 1

industrial pollution

nitrogen cycle

Option 4

Clear selection

Prothrombin which helps in clotting of blood is released by

1 point

lymphocytes

erythrocytes

monocytes

blood platelets

Clear selection

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

1 point

flavoxanthin

melanin

carotene

Xanthophyll

Clear selection

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