Biosciences – Botany and Zoology Study Material बिभाग ‘ख’

Updated on November 30, 2023
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Biosciences – Botany and Zoology Study Material बिभाग ‘ख’ Shared By Promodh Shirke

Biosciences – Botany and Zoology Study Material बिभाग ‘ख’ on mahasarkar.co.in. This is the page where we are deal with Biosciences – Botany and Zoology Study Material For Maharashtra Recruitment Exam. Every questions come from various source i.e. Study of life; cell-the basic unit of life; Classificaton of Living organisams; Organization of Living Body; Nutrition; Respiration; The Transport System; Excretion Metabolic wastes; Biocommunication; Muscle Movement Etc. यह पेज ओह सब स्टूडेंट के लिए है, जो नौकरी की तलाश में हैं और भारती परिक्षा दिने के लिए इच्छुक हैं।

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Biosciences – Botany and Zoology Study Material बिभाग ‘ख’

  1. A few drops in the Saccharine (sweetex) solution spilled on the floor attracts

(1) Ants in large numbers

(2) Houseflies in moderate numbers

(3) Only a few honey bees

(4) None of these

Ans:- (4) None of these

  1. Some states in India have imposed a ban the consumption of kesari dal (Lathyrus Sativus) because it cause gradual loss of

(1) Vision

(2) Movement of lower limbs

(3) Hearing

(4) Red blood cells

Ans:- (2) Movement of lower limbs

  1. Which one of the following statements about photosynthesis is not true?

(1) All green plants photosynthesize

(2) Only green plants photosynthesize

(3) Carbon dioxide is reduced during photosynthesis

(4) Some bacteria also photosynthesize

Ans:- (2) Only green plants photosynthesize

  1. The carbon of organic compounds in plants comes from

(1) Atmospheric carbon dioxide

(2) Carbonates absorbed from the soil

(3) Organic compounds absorbed from the soil

(4) All of these

Ans:- (1) Atmospheric carbon dioxide

  1. Which of the following scientists was awarded Nobel Prize for his work on photosynthesis?

(1) Robert Hooke

(2) Melvin Calvin

(3) FF Blackman

(4) CB Van Niel

Ans:- (2) Melvin Calvin

  1. Green plants evolve oxygen during the day rather than carbon dioxide. This means that

(1) Green plants do not respire

(2) Green plants respire only at night

(3) Green plants respire during the day also but the rate of respiration is very low

(4) The rate of photosynthesis is much higher than the rate of respiration

Ans:- (4) The rate of photosynthesis is much higher than the rate of respiration

  1. “I flatter myself having discovered the method that nature employs to purify air. It is vegetation.” Who is credited with this statements and discovery?

(1) Antoine Laurent Lavoisier

(2) Joseph Priestley

(3) Louis Pasteur

(4) William Harvey

Ans:- (2) Joseph Priestley

  1. Some animals have a unique method of bringing oxygen directly to the cells. These are

(1) Spiders

(2) Scorpions

(3) Insects

(4) Flatworms

Ans:- (3) Insects

  1. Puncture of the thoracic wall but not of the lung itself will cause

(1) Inflation of the lung

(2) Collapse of the lung

(3) A decreased breathing rate

(4) No a hot important interference with breathing

Ans:- (2) Collapse of the lung

  1. On a hot sultry afternoon, a fat person sweats far more profusely than a lean one of the same height. This is due to

(1) Increased rate of fat metabolism

(2) Increase in the size of pores on the skin depending upon greater pressure exerted by sweat

(3) The presence of more sweat pores depending upon greater surface area in a fat person

(4) Greater surface in a lean person and, therefore, increased rate of evaporation of sweat formed

Ans:- (4) Greater surface in a lean person and, therefore, increased rate of evaporation of sweat formed

  1. Muscle fatigue occurs due to the accumulation of

(1) Pyruvic acid

(2) Lactic acid

(3) Oxaloacetic acid

(4) Uric acid

Ans:- (2) Lactic acid

  1. If a paste of rice or wheat flour is left overnight in the kitchen, its volume increases significantly because of

(1) The aromatic air of the kitchen

(2) Bacterial growth

(3) Swelling of starch particles in the flour due to absorption of water and air

(4) The release of carbon dioxide due to the activity of yeast

Ans:- (3) Swelling of starch particles in the flour due to absorption of water and air

  1. It is not advisable to sleep under a tree at night at night because of the

(1) Release of less oxygen

(2) Release of more oxygen

(3) Release of carbon dioxide

(4) Release of carbon monoxide

Ans:- (1) Release of less oxygen

  1. In case of cardiac arrest, what should be the most primary step?

(1) Mouth-to-mouth respiration

(2) Cardiac massage

(3) To call a doctor

(4) None of these

Ans:- (2) Cardiac massage

  1. The life span of human red corpuscles is

(1) Uncertain

(2) 120 days

(3) 180 days

(4) As long as the individual survives

Ans:- (2) 120 days

  1. The rate at a which the heart beats per minute in an adult average

(1) 60

(2) 72

(3) 84

(4) 96

Ans:- (2) 72

  1. Once blood clotes at a wound, harmful bacteria are prevented from entering by

(1) Antibodies

(2) Exudation of serum

(3) Scab formation

(4) Antitoxins released by the blood clot

Ans:- (3) Scab formation

  1. Venous blood is carried to the lungs for oxygenation by the

(1) Pulmonary arteries

(2) Pulmonary veins

(3) Pulmonary arterio-venous shunt

(4) Right ventricle

Ans:- (2) Pulmonary veins

  1. People who live at high altitudes have rosy cheeks because

(1) Hemoglobin has an increased binding affinity for oxygen to become deep red in colour

(2) Red cell concentration becomes considerably above the average in response to lowered oxygen pressure

(3) The rate of capillary circulation increases in the skin to make it look pinkish

(4) All of these

Ans:- (2) Red cell concentration becomes considerably above the average in response to lowered oxygen pressure

  1. The fundamental role of root hairs in plants is

(1) To protect the young root from damage by coarse soil particles

(2) To protect the root from soil microbes

(3) To absorb water and mineral salts from the soil

(4) To bind particles to the root for firm fixation of the plant

Ans:- (4) To bind particles to the root for firm fixation of the plant

  1. Water and mineral salts are translocated in plants in the

(1) collenchymas

(2) Parenchyma

(3) Phloem

(4) Xylem

Ans:- (4) Xylem

  1. The transport of organic substances in plants is through

(1) Fibres

(2) Phloem

(3) Xylem

(4) Wood

Ans:- (2) Phloem

  1. Water and mineral salts are translocated through vessels in angiosperms. The maximum length of such a vessel is

(1) 100 u

(2) 100 mm

(3) 100 cm

(4) more than 100 cm

Ans:- (4) more than 100 cm

  1. The volume of urine produced in an adult human every 24 hours is

(1) 1.0 litre

(2) 1.5 litres

(3) 3.0 liters

(4) 5.0 liters

Ans:- (2) 1.5 litres

  1. The artificial kidney operates on the principle of

(1) Diffusion

(2) Osmosis

(3) Dialysis

(4) Active transport

Ans:- (4) Active transport

  1. The least toxic of nitrogenous wastes is

(1) Urea

(2) Creatinine

(3) Uric acid

(4) Creatine

Ans:- (1) Urea

  1. The excreta of lizards and birds contains a white component which is chemically

(1) Urea

(2) Uric acid

(3) Creatinine

(4) Precipitated calcium

Ans:- (2) Uric acid

  1. The control centres that regulate hunger, water balance and body temperature are located in the

(1) Pons

(2) Medulla oblongata

(3) Thalamus

(4) Hypothalamus

Ans:- (4) Hypothalamus

  1. The rate and force of the heartbeat, the secretion of glands of the alimentary tract and the contraction of involuntary muscles are controlled by the

(1) Central nervous system

(2) Spinal nerves

(3) Cranial nerves

(4) Autonomic nervous system

Ans:- (4) Autonomic nervous system

  1. The cerebellum

(1) Contains the pons

(2) Controls the release of melatonin

(3) Controls coordination

(4) Controls the vital function of respiration and circulation

Ans:- (3) Controls coordination

  1. Encephalitis occurs when

(1) There is excessive cerebrospinal fluid

(2) A person suffers a stroke

(3) The basal ganglia are damaged

(4) The meninges of the brain become inflamed

Ans:- (4) The meninges of the brain become inflamed

  1. A person will have brown eyes, blue eyes or black eyes depending upon the particular pigment present in the

(1) Cornea

(2) Choroid

(3) Iris

(4) Vitreous body

Ans:- (3) Iris

  1. While swallowing a tablet of chloroquin, one experiences its bitter taste when it accidentally comers in contact with the

(1) Tip of the tongue

(2) Side of the tongue

(3) Centre of the tongue

(4) Back of the tongue

Ans:- (4) Back of the tongue

  1. The centres for balancing and hearing lie respectively, in the

(1) Cornea

(2) Choroid

(3) Conjunctive

(4) Sclerotic

Ans:- (2) Choroid

  1. The expulsion of milk from the breast during suckling is brought about by

(1) Prolactin

(2)  Oxytocin

(3) Vasopressin

(4) Estrogen and progesterone

Ans:- (2)  Oxytocin

  1. The sex of a child is determined

(1) At the time of the sperm’s entry

(2) At the time of fertilization of the ovum

(3) Six to seven weeks after conception

(4) In the third month of pregnancy

Ans:- (2) At the time of fertilization of the ovum

  1. Because the cells of islets of Langerhans are worn out completely, one would expect to find a

(1) Low blood glucose level

(2) Normal blood glucose level but low urine glucose level

(3) High blood glucose level but low urine glucose level

(4) High blood glucose level and high urine glucose level

Ans:- (4) High blood glucose level and high urine glucose level

  1. The movement of eggs from the ovaries to the uterus proceeds through the

(1) cervix

(2) vagina

(3) Fallopian tube

(4) placenta

Ans:-

  1. The destruction of members of the uterus and consequent bleeding that occurs periodically in females of primates is

(1) Menopause

(2) Female climacteric

(3) Behavioral estrus

(4) Menstruation

Ans:- (3) Behavioral estrus

  1. The period that marks the physiological cessation of the menstrual flow and consequently the end of the child-bearing period is referred to as

(1) Amenorrhoea

(2) Female sterility (acquired)

(3) Female climacteric

(4) Menstrual pause

Ans:- (4) Menstrual pause

  1. The most likely period in which a woman may conceive is

(1) From the 7th to 10th day of the menstrual cycle

(2) From the 15th to 19th day of the menstrual cycle

(3) On the 14th day of the menstrual cycle

(4) At any time in the menstrual cycle

Ans:- (2) From the 15th to 19th day of the menstrual cycle

  1. Ovulation generally occurs

(1) just before menstruation

(2) during menstruation

(3) just after menstruation

(4) Midway through the menstrual cycle

Ans:- (4) Midway through the menstrual cycle

  1. The average length of human pregnancy is

(1) 34-36 weeks

(2) 36-38 weeks

(3) 38-40 weeks

Ans:- (2) 36-38 weeks

  1. Monozygotic twins are

(1) always of the same sex

(2) Sometimes of the same sex

(3) Usually of the same sex

(4) Never of the same sex

Ans:- (1) always of the same sex

  1. Following fertilization, implantation usually occurs

(1) Almost immediately

(2) Between 12 and 24 hours

(3) Within 1-3 days

(4) After 4 days

Ans:- (4) After 4 days

  1. When a child is born, its blood

(1) Flows for the first time

(2) Reverses its flow through the heart

(3) Ceases to pass from one atrium to the other

(4) Carries wastes for the first time

Ans:- (3) Ceases to pass from one atrium to the other

  1. The possibility of fraternal twins occurs

(1) At the fertilization stage

(2) Subsequent to fertilization

(3) At the zygotic stage

(4) At conception

Ans:- (1) At the fertilization stage

  1. Bull semen for the purpose of artificial insemination is stored in

(1) Ice

(2) Liquid oxygen

(3) Liquid nitrogen

(4) Liquid carbon dioxide

Ans:- (3) Liquid nitrogen

  1. A spore is

(1) A commonly – used medicine for cultivating bacteria

(2) A common seaweed found in tropical regions

(3) A reproductive unit of plants, protozoa, and bacteria

(4) A pore in the human skin

Ans:- (3) A reproductive unit of plants, protozoa, and bacteria

  1. Some plants flower only once in their lifetime. They are called

(1) Monocarpic

(2) Monogamous

(3) Monogenic

(4) Monomorphic

Ans:- (1) Monocarpic

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७ वी (7th) दहावी (SSC) बारावी (HSC) डिप्लोमा आय.टी.आय पदवी
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