MCQOPTIONS
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MCQOPTIONS
This section includes 1075 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 401. |
Sugarcane plants are usually propagated by vegetative means because |
| A. | they do not produce seeds |
| B. | it is possible to maintain genetic quality |
| C. | the incidence of disease may be reduced |
| D. | None of these |
| Answer» B. it is possible to maintain genetic quality | |
| 402. |
Approximately how many times each day, do our heart valves open and close normally? |
| A. | 10,000 times |
| B. | 1,00,000 times |
| C. | 1,50,000 times |
| D. | 2,00,000 times |
| Answer» C. 1,50,000 times | |
| 403. |
The kidney shaped guard cells are present in |
| A. | Dicot plants |
| B. | Monocot plants |
| C. | Both the above |
| D. | Algae |
| Answer» B. Monocot plants | |
| 404. |
A prokaryotic cell does not have which of the following? |
| A. | Ribosomes |
| B. | Cell membrane |
| C. | Nucleus |
| D. | DNA |
| Answer» D. DNA | |
| 405. |
Which of the following plant pigments absorbs in red and far-red region of light? |
| A. | Carotenoide |
| B. | Chlorophyll |
| C. | Phytochrome |
| D. | Cryptochrome |
| Answer» D. Cryptochrome | |
| 406. |
Which animal may suffer from foot and mouth disease ? |
| A. | Cattle |
| B. | Cattle and sheep |
| C. | Cattle and pigs |
| D. | Cattle, sheep and pigs |
| Answer» C. Cattle and pigs | |
| 407. |
Which one of the following four secretions, is different from the remaining three in regard to its mode of transport from the source gland to the site of action? |
| A. | Saliva |
| B. | Sweat |
| C. | Bile |
| D. | Epinephrine |
| Answer» D. Epinephrine | |
| 408. |
Aspartame is the name of a product used by diabetic patients as a sweetening agent. It belongs to the class of |
| A. | Carbohydrates |
| B. | |
| C. | Peptides |
| D. | Polyhydric alcohols |
| E. | Alkaloids |
| Answer» C. Peptides | |
| 409. |
Identify the correct stateme-nt with respect to Biogas. |
| A. | Mixture of gases from volcanoes |
| B. | Gas produced from certain crude oil wells |
| C. | Gas produced by incomplete combustion of biomass |
| D. | Gas produced by fermen-tation of biomass |
| Answer» E. | |
| 410. |
The gas released during photosynthesis: |
| A. | Carbon dioxide |
| B. | Oxygen |
| C. | Carbon monoxide |
| D. | Sulphur dioxide |
| Answer» C. Carbon monoxide | |
| 411. |
Vegetable oils are converted into solid fat (ghee) by |
| A. | Hydrolysis |
| B. | Addition of agar |
| C. | Oxidation using air and a catalyst |
| D. | Hydrogenation |
| Answer» E. | |
| 412. |
Natural organic fertilizers are found to be better then chemical fertilizers because |
| A. | chemical fertilizers are less productive |
| B. | organic fertilizers are more productive |
| C. | organic fertilizers sustain soil productivity |
| D. | chemical fertilizers are toxic |
| Answer» D. chemical fertilizers are toxic | |
| 413. |
A drug which helps in controlling fever is |
| A. | Ibuprofen |
| B. | Penicillin |
| C. | Paracetamol |
| D. | Corticosteroid |
| Answer» D. Corticosteroid | |
| 414. |
Haemoglobin is a |
| A. | protein |
| B. | carbohydrate |
| C. | fat |
| D. | vitamin |
| Answer» B. carbohydrate | |
| 415. |
Which cells in our body have the least regenerative power? |
| A. | Brain cells |
| B. | Mussle cells |
| C. | Bone cells |
| D. | Liver cells |
| Answer» B. Mussle cells | |
| 416. |
What is true about viruses without exception? |
| A. | They contain a core of RNA |
| B. | They can infect bacteria |
| C. | They cannot produce antibodies |
| D. | They can multiply only in host cells |
| Answer» E. | |
| 417. |
Alfalfa is the name of a kind of |
| A. | Forest |
| B. | Crop |
| C. | Grass |
| D. | None of these |
| Answer» C. Grass | |
| 418. |
Pulses are obtained from the family : |
| A. | Liliaceae |
| B. | Leguminosae |
| C. | Cycadaceae |
| D. | Fungi |
| Answer» C. Cycadaceae | |
| 419. |
Human beings have two ears because two ears help |
| A. | to judge the direction of sound |
| B. | to hear even a feeble sound |
| C. | to enjoy music better |
| D. | to distinguish between two kinds of sounds arriving at the ears in opposite directions |
| Answer» E. | |
| 420. |
It causes clotting of blood |
| A. | Thrombin |
| B. | Haemoglobin |
| C. | Pectin |
| D. | All of the above |
| Answer» B. Haemoglobin | |
| 421. |
The largest flightless bird which can run at a great speed is |
| A. | Penguin |
| B. | Kiwi |
| C. | Ostrich |
| D. | Emu |
| Answer» D. Emu | |
| 422. |
Pace-maker is associated with |
| A. | Kidney |
| B. | Brain |
| C. | Heart |
| D. | Lung |
| Answer» D. Lung | |
| 423. |
Bakeries use yeast in breadmaking because it |
| A. | makes the bread hard |
| B. | makes the bread soft and spongy |
| C. | enhances the food values |
| D. | keeps the bread fresh |
| Answer» C. enhances the food values | |
| 424. |
Which one of the following is the most sensitive Indicator of the health of a community? |
| A. | Birth rate |
| B. | Infant mortality rate |
| C. | Death rate |
| D. | Maternal mortality rate |
| Answer» C. Death rate | |
| 425. |
The total number of ear bones is |
| A. | 2 |
| B. | 4 |
| C. | 6 |
| D. | 8 |
| Answer» F. | |
| 426. |
The central control of respiratory activity in human body is exercised by |
| A. | cerebrum |
| B. | cerebellum |
| C. | medulla oblongata |
| D. | hypothalamus |
| Answer» D. hypothalamus | |
| 427. |
The duration 19-21 days refers to: |
| A. | incubation period of hen s egg |
| B. | |
| C. | average life-span of a red blood cell in humans |
| D. | the period of menstrual cycle soon after menstruation, during which fertilisation is most likely to occur |
| E. | period of completion of one schizogony cycle of malarial parasite inside a red blood cell |
| Answer» D. the period of menstrual cycle soon after menstruation, during which fertilisation is most likely to occur | |
| 428. |
Plants get water through the roots because of |
| A. | elasticity |
| B. | capillarity |
| C. | viscosity |
| D. | photosynthesis |
| Answer» C. viscosity | |
| 429. |
The histogen, from which epidermis is formed, is |
| A. | Dermatogen |
| B. | Periblem |
| C. | Plerome |
| D. | Calyptrogen |
| Answer» B. Periblem | |
| 430. |
In a plant, the xylem tissue conducts : |
| A. | water |
| B. | food |
| C. | water and food |
| D. | None of these |
| Answer» C. water and food | |
| 431. |
A person having blood type B could safely donate blood to persons with blood types |
| A. | A and O |
| B. | B and O |
| C. | A and AB |
| D. | B and AB |
| Answer» E. | |
| 432. |
The primary source of carbohydrates are |
| A. | Marine animals |
| B. | Plants |
| C. | Coal-tar |
| D. | Crude oil |
| Answer» C. Coal-tar | |
| 433. |
The process through which excess of light energy is dissipated in photosynthesis is known as |
| A. | Quenching |
| B. | Scavenging |
| C. | Photolysis |
| D. | Photo-phosphorylation |
| Answer» B. Scavenging | |
| 434. |
The parts of human body affected by Pyria are: |
| A. | eyes |
| B. | small intestine |
| C. | teeth and gums |
| D. | large intestine |
| Answer» D. large intestine | |
| 435. |
Which of the following is not a gland ? |
| A. | Thyroid |
| B. | Stomach |
| C. | Liver |
| D. | Pancreas |
| Answer» C. Liver | |
| 436. |
Carrot is a rich source of vitamin |
| A. | A |
| B. | C |
| C. | D |
| D. | E |
| Answer» B. C | |
| 437. |
The vitamin which cannot be had from any vegetables is |
| A. | Vitamin B |
| B. | Vitamin C |
| C. | Vitamin D |
| D. | Vitamin E |
| Answer» D. Vitamin E | |
| 438. |
Scurvy is a disease of |
| A. | hair |
| B. | skin |
| C. | liver |
| D. | eyes |
| Answer» C. liver | |
| 439. |
The substrate of Photorespiration is : |
| A. | Fructose |
| B. | Pyruvic acid |
| C. | Glycolate |
| D. | Glucose |
| Answer» D. Glucose | |
| 440. |
High level of uric acid in the blood causes |
| A. | Arthritis |
| B. | Gout |
| C. | Rheumatism |
| D. | Asthma |
| Answer» C. Rheumatism | |
| 441. |
The strongest bone of the body is present in the |
| A. | Thigh |
| B. | Jaw |
| C. | Arm |
| D. | Neck |
| Answer» B. Jaw | |
| 442. |
Which of the following groups of organisms reproduce faster? |
| A. | Algae |
| B. | Fungi |
| C. | Bacteria |
| D. | Protozoa |
| Answer» D. Protozoa | |
| 443. |
Why death of fish is more common during summer than in winter? |
| A. | shortage of food |
| B. | concentration of toxins |
| C. | depletion of oxygen |
| D. | spread of diseases |
| Answer» D. spread of diseases | |
| 444. |
Which one of the following foodstuffs of the same quantity possesses the highest calorific value? |
| A. | Butter |
| B. | Apple |
| C. | Cheese |
| D. | Sugar |
| Answer» B. Apple | |
| 445. |
A person of blood group AB can receive blood from a person of |
| A. | Only group AB |
| B. | Only group A |
| C. | Only group B |
| D. | Any blood group |
| Answer» E. | |
| 446. |
A plant with fibrous root system is : |
| A. | Wheat |
| B. | Pea |
| C. | Mustard |
| D. | Bean |
| Answer» B. Pea | |
| 447. |
Ascent of sap in plants takes place through |
| A. | Pith |
| B. | Phloem |
| C. | Cambium |
| D. | Xylem |
| Answer» E. | |
| 448. |
Which of these fruits develop from an inflorescence ? |
| A. | Apple |
| B. | Guava |
| C. | Pineapple |
| D. | Grape |
| Answer» D. Grape | |
| 449. |
The function of Haemoglobin is to : |
| A. | provide amino acids |
| B. | carry oxygen |
| C. | provide enzymes |
| D. | help in excretion |
| Answer» C. provide enzymes | |
| 450. |
Which of the following stores glycogen? |
| A. | Spleen |
| B. | Pancreas |
| C. | Gastric glands |
| D. | Liver |
| Answer» E. | |