581 MCQ Questions in english

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581 MCQ Questions in english हिन्दी

413. Which of the following eco-systems has the biggest surface area on the planet?

A. Mountain Ecosystem

B. Marine Ecosystem

C. Grassland Ecosystem

D. Desert Ecosystem

412. The bees have the following acid –

A. Glutaric

B. Acetic

C. Citric

D. Formic

411. Mycobacterium leprae causes leprosy, Corynebacterium diphtheria causes diphtheria, and Vibrio comma causes

A. typhoid

B. tetanus

C. influenza

D. cholera

410. An enzyme called ptyalin is created in the

A. salivary glands

B. pituitary glands

C. thyroid glands

D. pancreas

409. In ecosystems, nitrogen is fixed in the manner listed below. Which of the following assertions is untrue?

A. By electrical discharges in the atmosphere

B. By cyanobacteria

C. By industrially synthesised fertilizer

D. By denitrification

408. Plants generate pollen grains in

A. roots

B. leaves

C. stem

D. flower

407. Pollination by wind is called

A. zoophily

B. anemophily

C. hydrophily

D. entomophily

406. Mutation is

A. a factor responsible for plant growth

B. a factor responsible for plant growth

C. a change that is inherited

D. a change which affects the parents

405. Classes of enzymes include oxidoreductases, transferases, hydrolases, lyases, isomerases, and ligases.

A. enzymes

B. hormones

C. proteins

D. vitamins

404. The name of the young one is called a

A. cockroach

B. housefly

C. beetle

D. butterfly

403. Plants that thrive in conditions of typical humidity and temperature are referred to as

A. halophytes

B. halophytes

C. mesophytes

D. xerophytes

402. a protein referred to as a transporter of oxygen in our blood

A. myoglobin

B. collagen

C. keratin

D. haemoglobin

401. Pulses are a good source of

A. vitamins

B. proteins

C. fats

D. carbohydrates

400. The best option for studying mutations is one of the following

A. Haploids

B. Diploids

C. Tetraploids

D. Polyploid

399. Chromosome count for Down syndrome is

A. 46

B. 47

C. 48

D. 49

398. Mumps is a disease caused by

A. fungus

B. virus

C. bacterium

D. None of these

397. The majority of our body's tissues are

A. nervous

B. epithelial

C. connective

D. muscular

396. The most typical poultry illness in India is

A. ranikhet

B. fowl pox

C. tick fever

D. coryza

395. Radish is a

A. bulb

B. conn

C. modified root

D. tuber

394. The outer covering of the virus made up of protein is

A. coat

B. virion

C. viriod

D. capsid

393. Light-related motions are depicted by

A. flowering plants

B. lower plants

C. all the plants

D. all land plants

392. Our major foods, fibers, spices, fruits, and beverage crops are

A. gymnosperms plants

B. flowering plants

C. pteridophytes

D. bryophytes

391. Organic Substances that regulate growth and development in extremely small doses are referred to as

A. vitamins

B. hormones

C. enzymes

D. None of the above

390. The occurrence of spontaneous radioactive emission is known as

A. protons (alpha particles)

B. electrons (beta particles)

C. gamma rays (short wave electromagnetic waves)

D. All of the above

389. Dicot root and monocot root are different in that

A. open vascular bundles

B. scattered vascular bundles

C. well developed pith

D. radially arranged vascular bundles

388. Night blindness is caused by a lack of which vitamin?

A. Vitamin A

B. Vitamin B

C. Vitamin C

D. Vitamin D

387. Norepinephrine increases

A. blood pressure

B. saliva production

C. urine production

D. respiration

386. Pigmentation of the skin is due to

A. lymphocytes

B. monocytes

C. leucocytes

D. melanocytes

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