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201.

Select the correct statement about active and passive immunity.

Answer»

 Active and passive humoral immunity are both MECHANISMS of adaptive immunity that use ANTIBODIES



Active and passive humoral immunity are both mechanisms of adaptive immunity that use antibodies.

202.

Which is the correct pair of inherited chromosomes for the child to be a girl?

Answer»

 X from father and X from mother



X from father and X from mother is the CORRECT PAIR of inherited chromosomes for the CHILD to be a girl.

203.

Where are the taste receptors located?

Answer»

 All of the above



The taste RECEPTORS are LOCATED in EPIGLOTTIS, upper ESOPHAGUS and tip of the tongue.

204.

Censor mechanism of dispersal of seeds is found in

Answer»

 Poppy



Censor MECHANISM of SEED DISPERSAL is a type of dispersal by wind, which generally occur in poppy. Its seeds bear hairy FIBERS outside and are very light in weight, which AID in easy dispersal by wind.

205.

It is the study of internal organs of organisms.

Answer»

 Anatomy



The best KNOWN aspect of morphology, usually CALLED anatomy, is the study of gross structure, or FORM, of ORGANS and ORGANISMS.

206.

Branch of biology which deals with the study of identification, nomenclature and classification of organisms is

Answer»

 Taxonomy



Taxonomy is that branch of biology DEALING with the identification and NAMING of ORGANISMS.

207.

Study of internal structure of organism is called

Answer»

 Anatomy



Anatomy is the branch of BIOLOGY CONCERNED with the STUDY of the structure of organisms and their PARTS.

208.

A typical chromosome has two parts a centrifuge and ________

Answer»

 Centrosomes



A TYPICAL chromosome has TWO parts a CENTRIFUGE and Centrosome.

209.

Stomata helps in

Answer»

 EXCHANGE of GASES



Stomata HELPS in exchange of gases.

210.

The phenomenon of summer sleep by animals is called

Answer»

 Aestivation



Aestivation is a state of ANIMAL dormancy, similar to HIBERNATION, ALTHOUGH TAKING place in the SUMMER rather than the winter.

211.

The first root produced from a seed is known as

Answer»

 Radicle



The PRIMARY ROOT, or radicle, is the FIRST organ to appear when a seed germinates. It grows downward into the SOIL, anchoring the seedling. In gymnosperms and dicotyledons (angiosperms with two seed leaves), the radicle becomes a taproot.

212.

Branch of agriculture concerned with the production of crops is

Answer»

 Agronomy



Agronomy is the BRANCH of AGRICULTURE CONCERNED with the PRODUCTION of CROPS.

213.

Placenta is the structure formed

Answer»

 by the UNION of FOETAL and uterine TISSUE



Placenta is the structure FORMED by the union of foetal and uterine tissue.

214.

Which of the following is not a form of Monosaccharide Sugar?

Answer»

 Maltose



Maltose is not a FORM of MONOSACCHARIDE SUGAR.

215.

Which one is the largest cells in white blood corpuscles?

Answer»

 Monocytes



Monocyte is the LARGEST CELLS in WHITE BLOOD CORPUSCLES.

216.

Plasmodium is a

Answer»

 Parasite



Plasmodium, a genus of parasitic protozoans of the sporozoan SUBCLASS Coccidia that are the causative organisms of MALARIA. Plasmodium, which infects red blood cells in mammals (including humans), BIRDS, and reptiles, occurs worldwide, especially in TROPICAL and temperate ZONES.

217.

As an infant, the ability to produce antibodies is

Answer»

 LIMITED



As an INFANT, the ABILITY to PRODUCE ANTIBODIES is limited.

218.

An individual whose blood type is B may in an emergency, donate blood to a person whose blood type is

Answer»

 AB or B



An INDIVIDUAL whose BLOOD type is B MAY in an EMERGENCY, DONATE blood to a person whose blood type is AB or A.

219.

Through cell membrane, which substances can pass more easily than others?

Answer»

 LIPID SOLUBLE



Lipid soluble can PASS more EASILY.

220.

All enzymes are

Answer»

 Proteins



Enzymes are proteins that act as BIOLOGICAL catalysts (BIOCATALYSTS). Catalysts accelerate chemical REACTIONS.

221.

Amoeba belongs to which group

Answer»

 PROTOZOA



Amoeba BELONGS to which GROUP protozoa.

222.

The single membrane surrounding vacuoles in plant cells is known as

Answer»

 TONOPLAST



Also called the vacuolar membrane, the tonoplast is the CYTOPLASMIC membrane surrounding a VACUOLE, separating the vacuolar contents from the cell's CYTOPLASM.

223.

In each pollen sacs a large number of pollens or microspores are produced by

Answer»

 Meiosis



In a process CALLED microsporogenesis, four HAPLOID MICROSPORES are produced from each diploid sporogenous cell (microsporocyte, pollen mother cell or meiocyte), after meiotic division. After the formation of the four microspores, which are contained by callose WALLS, the development of the pollen grain walls BEGINS.

224.

In a cell process of respiration takes place in

Answer»

 Mitochondria



Cellular RESPIRATION OCCURS in the double-membrane ORGANELLE CALLED the MITOCHONDRION.

225.

Antibody is produced by

Answer»

 B-lymphocytes



Antibody is PRODUCED by B-lymphocytes.

226.

Which among the following is not a true fruit?

Answer»

 Apple



Technically, apple is not a true fruit. A fruit is a ripened ovary. Inside the apple fruit , the structure HOLDING the seeds is ACTUALLY the fruit while the EDIBLE fleshy PART is actually the swollen wall MATERIAL of ovary.

227.

What is full form of BOD?

Answer»

 BIOLOGICAL OXYGEN DEMAND



Biological Oxygen Demand is full FORM of BOD.

228.

What part of the body controls balance?

Answer»

 Cerebellum



The cerebellum, in the back of the brain, controls balance, coordination and fine MUSCLE CONTROL (e.g., WALKING). It also functions to MAINTAIN posture and equilibrium.

229.

The function of nucleolus is the synthesis of

Answer»

 R-RNA



The FUNCTION of NUCLEOLUS is the SYNTHESIS of R-RNA.

230.

Biology is the scientific study of

Answer»

 Living ORGANISMS



Biology is a natural SCIENCE concerned with the STUDY of life and living organisms.

231.

Nitrogen Fixation is carried out primarily by

Answer»

 Bacteria



Nitrogen fixation is carried out NATURALLY in soil by MICROORGANISMS termed DIAZOTROPHS that include bacteria such as Azotobacter and ARCHAEA. Some nitrogen-fixing bacteria have symbiotic relationships with plant groups, especially legumes.

232.

Pepsin is a

Answer»

 ENZYME



Pepsin is a STOMACH enzyme that serves to digest proteins found in ingested FOOD. Gastric chief cells secrete pepsin as an inactive zymogen CALLED pepsinogen. Parietal cells within the stomach lining secrete hydrochloric acid that lowers the pH of the stomach.

233.

One of the following is not a function of bones.

Answer»

 SECRETION of hormones for CALCIUM REGULATION in blood and BONES



Secretion of hormones for calcium regulation in blood and bones is not a function of a bone.

234.

Increased RBC's in the blood leads to a condition called

Answer»

 Polycthemia



Polycythemia is a condition that results in an INCREASED level of CIRCULATING RED blood CELLS in the bloodstream.

235.

The elastic vessels which transport blood to the heart is known as

Answer»

 VEINS



The elastic VESSELS which TRANSPORT BLOOD to the heart is known as veins.

236.

Which of the following cells produce antibodies?

Answer»

 PLASMA CELLS



Plasma cells PRODUCE ANTIBODIES.

237.

In case of a heart attack, a hormone is injected as an emergency measure, Which one is it?

Answer»

 Adrenaline



In the case of a heart attack, the hormone that injected as an emergency measure is Adrenaline. An adrenaline shot can INCREASE the chance that the heart will REGAIN a normal rhythm or restart your heart after a cardiac ARREST by DIRECTING the flow of blood to the heart.

238.

Fruitfly has

Answer»

 8 CHROMOSOMES



Fruitfly has 8 chromosomes.

239.

Octopus is

Answer»

 A MOLLUSC



Octopus is a mollusc.

240.

Cortisol is secreted by

Answer»

 Adrenal gland



Cortisol is RELEASED from the adrenal CORTEX and ALLOWS the body to CONTINUE to STAY on high alert.

241.

The study of microorganisms is termed as

Answer»

 Microbiology



Technically a microorganism or MICROBE is an ORGANISM that is microscopic. The STUDY of microorganisms is CALLED microbiology.

242.

A seed is ripened ________

Answer»

 Ovule



A seed is a small embryonic plant ENCLOSED in a covering CALLED the seed coat, USUALLY with some stored FOOD. It is the product of the ripened ovule of gymnosperm and ANGIOSPERM plants which occurs after fertilization and some growth with in the mother plant.

243.

Medulla oblongata is a part of which of the following?

Answer»

 BRAIN



Medulla OBLONGATA is a PART of brain.

244.

The elastic vessels which transport blood from the heart is known as

Answer»

 Arteries



The ELASTIC vessels which transport blood from the HEART is KNOWN as arteries.

245.

Human beings hearing range is ________

Answer»

 20 to 20,000 HZ



Human BEINGS HEARING RANGE is 20 to 20,000 Hz.

246.

PH of human blood is

Answer»

 7.4



The pH scale, RANGES from 0 (strongly acidic) to 14 (strongly basic or alkaline). A pH of 7.0, in the MIDDLE of this scale, is neutral. Blood is normally slightly basic, with a NORMAL pH range of about 7.35 to 7.45.

247.

Octopus belongs to the phylum

Answer»

 MOLLUSCA



Octopus BELONGS to the PHYLUM Mollusca.

248.

Which chemical is not found in DNA nucleotides?

Answer»

 Uracil



The only other difference in the nucleotides of DNA and RNA is that one of the four organic BASES differs between the two polymers. The bases ADENINE, guanine, and cytosine are FOUND in both DNA and RNA; THYMINE is found only in DNA, and uracil is found only in RNA.

249.

Mycology is the branch of botany in which we study about

Answer»

 Fungi



Mycology is the branch of biology concerned with the study of fungi, including their genetic and biochemical PROPERTIES, their taxonomy and their use to humans as a SOURCE for tinder, TRADITIONAL medicine, food, and entheogens, as WELL as their dangers, such as toxicity or infection.

250.

Deficiency of fluoride leads to which one of the following health problems?

Answer»

 TOOTH caries



FLUORIDE deficiency is a disorder which MAY CAUSE increased dental caries due to a lack of fluoride in the diet. Dental caries or tooth decay is the breakdown of dental tissues by the acidic products released by the "bacterial fermentation of dietary CARBOHYDRATES”.