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151.

Which of the following transports water from the roots of the plant to its leaves?

Answer»

 Xylem



Xylem TRANSPORTS WATER from the ROOTS of the PLANT to its LEAVES.

152.

Bleeding of gums, falling of teeth, fragile bones and delayed wound healing occur due to the deficiency of which one of the following vitamins?

Answer»

 Vitamin C



Deficiency of Vitamin C causes Scurvy, Swelling of GUMS etc.Vitamin K causes Non-clotting of blood ,Vitamin D causes Rickets in children and Osteomalasia in adults, Vitamin B 1 causes Beriberi,B2 causes Cracking of SKIN,reddish eye,cracking of tongue,B3 causes Whitening of hair ,mentally retardness ,B5 causes Pallagra or 4D syndrome,B6 causes Anemia,skin disease ,B7 causes PARALYSIS,hair falling,B11 causes Dysentery and B12 causes JAUNDICE and Teroile Glutemi.

153.

________ connects muscle to the bones.

Answer»

 Tendons



A TENDON is a FIBROUS connective tissue which attaches MUSCLE to BONE.

154.

Arteries supplying blood to the heart are called

Answer»

 Coronary arteries



Coronary arteries supply blood to the HEART MUSCLE. LIKE all other tissues in the BODY, the heart muscle needs oxygen-rich blood to function. Also, oxygen-depleted blood MUST be carried away. The coronary arteries wrap around the outside of the heart.

155.

Ringworm is a disease caused by

Answer»

 Fungi



RINGWORM is a common infection of the skin and NAILS that is caused by fungus. The infection is called “ringworm” because it can cause an itchy, red, CIRCULAR RASH.

156.

Which one is the largest artery in the human body

Answer»

 AORTA



Most arteries CARRY OXYGENATED blood. The largest ARTERY is the aorta, which is connected to the heart and extends into the ABDOMEN.

157.

When a disease break out and spread from one place to another affecting large number of peoples it is called

Answer»

 Epidemic



When a disease break out and spread from ONE PLACE to ANOTHER affecting large number of PEOPLES it is called epidemic.

158.

The water readily available to plants for absorption by roots is

Answer»

 Capillary water



Capillary water is the water held by micropores of soil. This water is available for the plant because it gets trap in soil solution near the root of the PLANTS. And some water is retained in mineral salts by chemical bonds but it does not increase the absorption CAPACITY of roots. This is called CHEMICALLY combined water. Thus the only water available for the plant is capillary water so the correct option is C.

159.

The main function of Henle's loop is

Answer»

 Conservation of water



The principal function of the LOOP of Henle is in the recovery of water and SODIUM CHLORIDE from URINE.

160.

Which one is important in photosynthesis to allows plants to absorb energy from light?

Answer»

 Chlorophyll



Photosynthetic cells contain special pigments that absorb light energy. DIFFERENT pigments respond to different WAVELENGTHS of VISIBLE light. Chlorophyll, the PRIMARY pigment used in photosynthesis, reflects green light and absorbs red and BLUE light most strongly.

161.

Ozone hole refers to

Answer»

 decrease in thickness of ozone layer in stratosphere



The term 'ozone hole' REFERS to the depletion of the protective ozone layer in the upper atmosphere (stratosphere) over EARTH's polar regions. STRATOSPHERIC ozone is constantly produced by the ACTION of the sun's ultraviolet radiation on oxygen molecules (known as PHOTOCHEMICAL reactions).

162.

The brain is a part of which organ system?

Answer»

 NERVOUS SYSTEM



The nervous system is MADE up of the central nervous system and the peripheral nervous system: The brain and the spinal cord are the central nervous system. The nerves that GO through the whole body MAKE up the peripheral nervous system.

163.

How many pair of nerves arises from vertebral column?

Answer»

 31 pair



31 pair of NERVES arises from VERTEBRAL COLUMN.

164.

Which one is the biggest part of the brain?

Answer»

 Cerebrum



The largest part of the brain, the cerebrum has two hemispheres (or HALVES). The cerebrum CONTROLS voluntary movement, speech, INTELLIGENCE, memory, EMOTION, and SENSORY processing.

165.

What does the central nervous system consists of?

Answer»

 All the above



The CENTRAL nervous system is made up of the brain and SPINAL cord. The peripheral nervous system is made up of NERVES that branch off from the spinal cord and extend to all parts of the BODY.

166.

The story of vitamins dates back to

Answer»

 18th CENTURY



The story of vitamins DATES BACK to 18th century.

167.

Amoeba belongs to the phylum

Answer»

 PROTOZOA



Amoeba BELONGS to the PHYLUM protozoa.

168.

How many bones are there in the human cranium?

Answer»

 8



There are 8 BONES in the HUMAN CRANIUM.

169.

Acetylcholine is

Answer»

 Chemical transmitter



Acetylcholine is an organic chemical that functions in the brain and BODY of many TYPES of ANIMALS as a neurotransmitter—a chemical message released by NERVE cells to send signals to other cells, such as NEURONS, muscle cells and gland cells.

170.

The pair of spinal nerves in man are

Answer»

 31



SPINAL nerve, in vertebrates, any ONE of many PAIRED peripheral nerves that ARISE from the spinal cord. In humans there are 31 pairs of spinal nerve.

171.

The organs protected by the thoracic cage include the

Answer»

 Both a & b



The THORACIC cage ENCLOSES and protects the ORGANS of the thoracic cavity, including the HEART and LUNGS.

172.

When the diaphragm and external intercostal muscles contract,

Answer»

 The volume of the thorax INCREASES



When the DIAPHRAGM and external INTERCOSTAL MUSCLES contract, the volume of the thorax increases.

173.

Blood leaving lungs, is rich in

Answer»

 OXYGEN



Blood LEAVING LUNGS, is RICH in oxygen.

174.

If CO2 concentration in the blood increases, the breathing will

Answer»

 Increase



When CO2 CONCENTRATION in blood INCREASES, BREATHING becomes faster and deeper.

175.

By complete oxidation of glucose number of ATP molecule formed is

Answer»

 38



By COMPLETE OXIDATION of glucose NUMBER of ATP molecule formed is 38.

176.

The DNA bacterium consists of ring-like pieces known as the

Answer»

 PLASMIDS



The DNA BACTERIUM consists of ring-like pieces known as the plasmids.

177.

Which disease is caused due to deficiency of Iodine?

Answer»

 Goitre



Worldwide, iodine DEFICIENCY is the most common cause of THYROID enlargement and goiter. Within a goiter, nodules can develop. Patients with a large goiter may experience symptoms of choking, ESPECIALLY when lying down, and DIFFICULTY SWALLOWING and breathing.

178.

Cerebrum is located in which part of brain?

Answer»

 FORE FRONT



Cerebrum is LOCATED in fore front of BRAIN.

179.

Which of these is a human disease caused by bacteria?

Answer»

 TB



Infectious diseases can be caused by: BACTERIA. These one-cell organisms are RESPONSIBLE for illnesses such as strep THROAT, urinary TRACT infections and TUBERCULOSIS.

180.

Which blood group is called universal donor?

Answer»

 O-



O- is CALLED UNIVERSAL DONOR.

181.

Plants which grow on saline soils are known as

Answer»

 Halophytes



A halophyte is a salt-tolerant plant that GROWS in soil or WATERS of HIGH salinity, coming into CONTACT with saline water through its roots or by salt spray, such as in saline semi-deserts, mangrove swamps, MARSHES and sloughs and seashores.

182.

The branch of botany which deals with identification, nomenclature and classification of an organism is known as

Answer»

 TAXONOMY



The 'branch of BOTANY' which DEALS with the CLASSIFICATION 'nomenclature and IDENTIFICATION' is taxonomy.

183.

Virus was discovered by

Answer»

 D. Iwanowski



Two scientists CONTRIBUTED to the discovery of the first virus, Tobacco mosaic virus. Ivanoski reported in 1892 that extracts from infected leaves were STILL infectious after FILTRATION through a Chamberland filter-candle.

184.

Virus range in size from

Answer»

 2 nm to 300 nm



A virus is an INFECTIOUS agent of small size and simple composition that can multiply only in living CELLS of animals, plants, or bacteria. They range in size from about 20 to 300 nanometres in DIAMETER.

185.

Entamoeba Histolytica is a

Answer»

 Protozoan



Entamoeba histolytica is a protozoan PARASITE that ACCOUNTS for an ESTIMATED 100,000 annual DEATHS GLOBALLY.

186.

The audible sounds of heart are made by the closing of the

Answer»

 Valve



Closure of the HEART VALVES is associated with an AUDIBLE SOUND, called the heartbeat.

187.

Which vitamin also act as coenzymes?

Answer»

 B12



Vitamin B12 ACT as COENZYMES.

188.

In which body cavities are the lungs located

Answer»

 THORACIC CAVITY



The LUNGS are LOCATED in thoracic cavity.

189.

Which of the following does not occur during mitosis?

Answer»

 Replication of the DNA



Replication of DNA does not OCCUR in mitosis. Replication of DNA occurs during S phase, an ENTIRELY different phase of cell division.

190.

Asexual reproduction differs from sexual reproduction in that in asexual reproduction, ________

Answer»

 The new ORGANISMS are GENETICALLY IDENTICAL to the parent



Sexual REPRODUCTION just means COMBINING genetic material from two parents. Asexual reproduction produces offspring genetically identical to the one parent.

191.

Who of the following is known as the Father of Biology?

Answer»

 ARISTOTLE



Development as a sequential knowledge of biology TOOK place in the era of the famous Greek philosopher Aristotle (384-322 B.C.). He revealed his thoughts about various aspects of the life of plants and animals. THEREFORE, Aristotle is CALLED as the Father of Biology.

192.

The total number of pairs of Peripheral nerves in man are

Answer»

 43



The TOTAL number of pairs of PERIPHERAL nerves in man are 43.

193.

Who is regarded as father of plant tissue culture?

Answer»

 Haberlandt



On the basis of that 1902 ADDRESS and his pioneering experimentation before and LATER, Haberlandt is justifiably recognized as the father of PLANT tissue CULTURE.

194.

Skin is an example of what type of tissue?

Answer»

 EPITHELIAL



Skin is an EXAMPLE of epithelial TISSUE.

195.

Female reproductive hormones is

Answer»

 All of these



Reproductive hormones are usually made in the ovaries (in FEMALES) and testes (in males). FEMALE reproductive hormones include estrogen and progesterone. They help develop and maintain female SEX characteristics and play an important role in the MENSTRUAL cycle, fertility, and pregnancy.

196.

Enlargment of _______ gland takes place due to deficiency of iodine

Answer»

 Thyroid



Enlargment of thyroid gland takes PLACE due to DEFICIENCY of IODINE.

197.

Chromosome start separating at which stage of mitosis?

Answer»

 Early ANAPHASE



In anaphase, the SISTER CHROMATIDS separate from each other and are PULLED towards OPPOSITE ends of the cell.

198.

Myopia is connected with

Answer»

 EYES



Myopia is CONNECTED with eyes.

199.

Which of the following does not have any enzymes in its cells?

Answer»

 Virus



Virus is not a CELL; it remains just in the FORM of a genetic material or encapsulated on outside with a protein capsid. It generally injects its genetic material into HOST cells wherein the VIRAL PROTEINS get synthesised.

200.

Microscopic organism which passively float on the surface of water is called

Answer»

 Both (a) and (B) both



Microscopic ORGANISM which passively float on the surface of water is CALLED Zooplanktons and PHYTOPLANKTONS.