MCQOPTIONS
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MCQOPTIONS
This section includes 1275 Mcqs, each offering curated multiple-choice questions to sharpen your Biology Mcqs knowledge and support exam preparation. Choose a topic below to get started.
| 401. |
Vacuoles are fluid filled sacs surrounded by a membrane called__________? |
| A. | tonoplast |
| B. | nuclear membrane |
| C. | cell membrane |
| D. | cell wall |
| Answer» B. nuclear membrane | |
| 402. |
The biggest group of invertebrates is_________? |
| A. | Worms |
| B. | Insects |
| C. | Jelly fish |
| D. | None of these |
| Answer» C. Jelly fish | |
| 403. |
Excessive lactic acid is converted into __________ by liver? |
| A. | Glucose |
| B. | Fructose |
| C. | Sucrose |
| D. | Glycogen |
| Answer» E. | |
| 404. |
Earthworm lives in___________? |
| A. | sea water |
| B. | moist soil |
| C. | fresh water |
| D. | none of these |
| Answer» C. fresh water | |
| 405. |
which of the following hepatitis is more contagious ? |
| A. | HAV |
| B. | HBV |
| C. | HCV |
| D. | HDV |
| Answer» D. HDV | |
| 406. |
Artherosclerosis is a major condition leading to__________? |
| A. | heart attack |
| B. | hypertension |
| C. | stroke |
| D. | tumor |
| Answer» B. hypertension | |
| 407. |
Which Part of the Brain Regulates Body Temperature? |
| A. | cerebellum |
| B. | cerebrum |
| C. | hypothalamus |
| D. | medulla |
| Answer» D. medulla | |
| 408. |
Shrinkage of protoplast due to exosmosis of water is__________? |
| A. | imbibition |
| B. | plasmolysis |
| C. | deplasmolysis |
| D. | adhesion |
| Answer» C. deplasmolysis | |
| 409. |
Accumulation of lipid molecules in brain cells lead to__________? |
| A. | paralysis |
| B. | oedema |
| C. | mental retardation |
| D. | all of these |
| Answer» D. all of these | |
| 410. |
The normal pH of human blood is____________? |
| A. | 6.4 |
| B. | 7.0 |
| C. | 7.4 |
| D. | 7.5 |
| Answer» D. 7.5 | |
| 411. |
A Vegetable containing sulphur is____________? |
| A. | Potato |
| B. | Cabbage |
| C. | Brinjal |
| D. | Pumpkin |
| Answer» C. Brinjal | |
| 412. |
Bean shaped cells in plants are_________? |
| A. | mesophyll cells |
| B. | xylem cells |
| C. | phloem cells |
| D. | guard cells |
| Answer» E. | |
| 413. |
Villi and microvilli increase__________? |
| A. | digestion |
| B. | assimilation |
| C. | absorption |
| D. | ingestion |
| Answer» D. ingestion | |
| 414. |
During the process of cell division which of the following divides first? |
| A. | cytodplasm |
| B. | vacuoles |
| C. | mitochondria |
| D. | nucleus |
| Answer» E. | |
| 415. |
In all coelentrates endoderm give rise to__________? |
| A. | nervous system |
| B. | digestive system |
| C. | reproductive system |
| D. | circulatory system |
| Answer» C. reproductive system | |
| 416. |
branches of biology and medicine concerned with the structure and function of plant and animal cells is called___________? |
| A. | Nephrology |
| B. | Semiology |
| C. | Orology |
| D. | Cytology |
| Answer» E. | |
| 417. |
Which type of motions are present in solid? |
| A. | translational |
| B. | rotational |
| C. | vibrational |
| D. | all of these |
| Answer» D. all of these | |
| 418. |
All plants do not possess___________? |
| A. | Lenticels |
| B. | Cuticle |
| C. | Stomata |
| D. | All of these |
| Answer» B. Cuticle | |
| 419. |
Animals living in the Tree trunks are known as___________? |
| A. | Arboreal |
| B. | Volant |
| C. | Amphibious |
| D. | Aquaticx |
| Answer» B. Volant | |
| 420. |
which of the following gas discovered by Scheele? |
| A. | chlorine |
| B. | hydrogen |
| C. | oxygen |
| D. | carbon dioxide |
| Answer» B. hydrogen | |
| 421. |
In plants there are_______basic types of tissues? |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | None of these |
| Answer» C. 4 | |
| 422. |
In which phase of cell cycle cell organelles are formed? |
| A. | S Phase |
| B. | G1 Phase |
| C. | G2 Phase |
| D. | G0 Phase |
| Answer» D. G0 Phase | |
| 423. |
Cell wall is richly impregnated with silica in__________? |
| A. | Rhodophyta |
| B. | Phaeophyta |
| C. | Baciliariophyta |
| D. | Euglenophyta |
| Answer» D. Euglenophyta | |
| 424. |
Locomotion in diatoms is carried out with the help of__________? |
| A. | Valve |
| B. | Raphe |
| C. | Pseudopodium |
| D. | Cilia or flagella |
| Answer» C. Pseudopodium | |
| 425. |
Golden brown colour of diatoms is due to presence of__________? |
| A. | Mycoxanthin, mucoxanthin and myxoxanthophylls |
| B. | Alpha and beta carotenes and myxoxanthin |
| C. | Fucoxanthin, diatoxanthin, diadinoxanthin |
| D. | None of the above |
| Answer» D. None of the above | |
| 426. |
Which of the following manufactures carbohydrates by the process of photosynthesis? |
| A. | chloroplast |
| B. | chromoplast |
| C. | leucoplast |
| D. | All of these |
| Answer» B. chromoplast | |
| 427. |
Cell wall is the non living , outermost boundary of__________cell? |
| A. | plant |
| B. | bacterial |
| C. | fungal |
| D. | all the above |
| Answer» E. | |
| 428. |
Diatomaceous earth is used for making __________? |
| A. | Fertilizers |
| B. | Weedicides |
| C. | Insecticides |
| D. | Fire proof bricks |
| Answer» E. | |
| 429. |
Diatoms stay afloat due to___________? |
| A. | Flagella |
| B. | Stored lpids |
| C. | Pseudopodia |
| D. | All of these |
| Answer» C. Pseudopodia | |
| 430. |
It is stiff rod of special cells surrounded by connecive tissue present in the mid -dorsal region and appears in the embryos of all chordates |
| A. | Placenta |
| B. | Notochord |
| C. | Cranianta |
| D. | Ligule |
| Answer» C. Cranianta | |
| 431. |
Sub- phylum vertebrate is also known as__________? |
| A. | Pisces |
| B. | Craniata |
| C. | Aves |
| D. | Amphibia |
| Answer» C. Aves | |
| 432. |
Centric discoid form of diatoms is__________? |
| A. | Diplaneis |
| B. | Coscinodiscus |
| C. | Camphyloneiscus |
| D. | Stephanodis |
| Answer» C. Camphyloneiscus | |
| 433. |
Which of the following is not nocturnal? |
| A. | Bedbug |
| B. | Mosquito |
| C. | Butterfly |
| D. | Cockroach |
| Answer» D. Cockroach | |
| 434. |
In many which phylum the body of an organisms is usually divided in there regions called head, thorax and abdomen? |
| A. | Arthropods |
| B. | Chordata |
| C. | Annelida |
| D. | Echinodermata |
| Answer» B. Chordata | |
| 435. |
In man which organisms cause abscesses on the skin of arms or legs? |
| A. | Ascaris |
| B. | Bacteria |
| C. | Ring worm |
| D. | Suinea worm |
| Answer» E. | |
| 436. |
Nephrostome in earthworm opens in____________? |
| A. | External space |
| B. | Internal Body cavity |
| C. | In gut |
| D. | In Bladder |
| Answer» C. In gut | |
| 437. |
Microfossile often present in petroleum producing formationsare those of__________? |
| A. | Diatioms |
| B. | Heliozoans |
| C. | Radiolarians |
| D. | Foraminiferans |
| Answer» B. Heliozoans | |
| 438. |
Melanin pigment in cockroach is found in__________? |
| A. | Epicuticle |
| B. | Exocuticle |
| C. | Endocuticle |
| D. | All of these |
| Answer» C. Endocuticle | |
| 439. |
The cell wall is usually composed of two overlapping halves called epitheca and hypotheca in__________? |
| A. | Diatoms |
| B. | Desmids |
| C. | Pyrrophyta |
| D. | Chlorophyta |
| Answer» B. Desmids | |
| 440. |
Scolidon or dog fish belong to the group of fishes called__________? |
| A. | Cartilaginous fishes |
| B. | Bony fishes |
| C. | Running fishes |
| D. | Jawless fishes |
| Answer» B. Bony fishes | |
| 441. |
They are considered to be the most primitive and are surely the first of the vertebrates? |
| A. | Frogs |
| B. | Reptiles |
| C. | Amphibinas |
| D. | Jawless fishes |
| Answer» E. | |
| 442. |
Chitin in cockroach is absent in____________? |
| A. | Epicuticle |
| B. | Exocuticle |
| C. | Endocuticle |
| D. | All of these |
| Answer» B. Exocuticle | |
| 443. |
The bristles on the body of the cockroach arise from__________? |
| A. | Epidermis |
| B. | Trichogen cell |
| C. | Basement membrane |
| D. | Malpighian cell |
| Answer» C. Basement membrane | |
| 444. |
The pressure generated when water enters & inflates plant cells is called ___________ potential? |
| A. | Water |
| B. | Osmotic |
| C. | Pressure |
| D. | Solute |
| Answer» D. Solute | |
| 445. |
Cooley’s anemia is another name used for___________? |
| A. | Leucemia |
| B. | Thalassaemia |
| C. | Sickle cell anemia |
| D. | None of these |
| Answer» C. Sickle cell anemia | |
| 446. |
The phylum chrordata comprise about how many species? |
| A. | 25,000 |
| B. | 50,000 |
| C. | 100,000 |
| D. | 10,00,000 |
| Answer» C. 100,000 | |
| 447. |
Bats & humming birds belong to___________? |
| A. | Endotherms |
| B. | Ectotherms |
| C. | Heterotherms |
| D. | Homeotherms |
| Answer» D. Homeotherms | |
| 448. |
A stone measuring 0.4 cm, blocking the outlet of renal pelvis resulting in mild to moderate tract obstruction. Which of the following technique will be opted to remove this stone? |
| A. | Kidney surgery |
| B. | Burring a hole and removing the stone manually (nephrolithotomy) |
| C. | Extracorporeal Shock wave lithotripsy |
| D. | None of these |
| Answer» D. None of these | |
| 449. |
Which of the vascular channels are related to Juxtramedullary nephrous only? |
| A. | Afferent and efferent arterioles |
| B. | Peritubualr capillaries |
| C. | Vasa nervosa |
| D. | Vasa recta |
| Answer» E. | |
| 450. |
Which adaptation is acquired by plants of cooler areas to prevent lipid crystal formation in cell membrane? |
| A. | Change in membrane protein composition |
| B. | Change in the solute composition of the cell membrane which prevents crystallization |
| C. | Increase in proportion of unsaturated fatty acids |
| D. | Development of heat shock proteins |
| Answer» D. Development of heat shock proteins | |