Table of Contents
Lesson – Biology
Q601. The enzymes are basically
(a) carbohydrates
(b) lipids
(c) proteins
(d) amino acids
Ans: (c)
Q602. ‘Darwin finches’ refers to a group of
(a) Fishes
(b) Lizards
(c) Birds
(d) Amphibians
Ans: (c)
Q603. In which of the following groups, animals bear no teeth?
(a) Peacock, Ostrich, Tortoise
(b) Owl, Loris, Crow
(c) Alligator, Turtle, Tortoise
(d) Turtle, Kiwi, Cow
Ans: (a)
Q604. Which of the following weeds has been found useful to check water pollution caused by industrial affluents ?
(a) Parthenium
(b) Elephant grass
(c) Water hyacinth
(d) Both (a) and (b) above
Ans: (c)
Q605. The element which is the most abundant in the human body is—
(a) oxygen
(b) carbon
(c) iron
(d) nitrogen
Ans: (a)
Q606. Teeth and Bones acquire strength and rigidity from
(a) Calcium
(b) Fluorine
(c) Chlorine
(d) Sodium
Ans: (a)
Q607. Master copy of genetic information is
(a) Nucleus
(b) r-RNA
(c) m-RNA
(d) DNA
Ans: (d)
Q608. Cockroach cannot survive in the water because its respiratory organ is
(a) Gill
(b) Trachea
(c) Book lung
(d) Pulmonary Sac
Ans: (b)
Q609. Fiber diet includes :
(a) glycogen
(b) proteins
(c) cellulose
(d) fats
Ans: (c)
Q610. From which part of a plant is turmeric obtained?
(a) Root
(b) Stem
(c) Fruit
(d) Flower
Ans: (b)
Q611. ____ is a multibranched polysaccharide of glucose that serves as a form of energy storage in animals and fungi.
(a) Cellulose
(b) Glycogen
(c) Pectin
(d) Chitin
Ans: (b)
Q612. Which of the following fibres is considered as the strongest natural fibre?
(a) Cotton
(b) Jute
(c) Wool
(d) Silk
Ans: (d)
Q613. An example of hormone is
(a) Cytosine
(b) Renin
(c) Oxytocin
(d) Peprin
Ans: (c)
Q614. The sense of balance is achieved by :
(a) Cerebrum equilibrium
(b) Thalamus equilibrium
(c) Cerebellum equilibrium
(d) Spinal chord equilibrium
Ans: (c)
Q615. The cuticle is absent in
(a) Leaf
(b) Stem
(c) Root
(d) Fruit
Ans: (c)
Q616. Which of the following is not a gland ?
(a) Thyroid
(b) Stomach
(c) Liver
(d) Pancreas
Ans: (b)
Q617. Normal fasting blood sugar level per 100 ml. of blood in man is
(a) 30 – 50 mg
(b) 50 – 70 mg
(c) 80 -100 mg
(d) 120 -140 mg
Ans: (c)
Q618. Vitamin E is particularly important for
(a) development of teeth
(b) carbohydrate metabolism
(c) normal activity of sex glands
(d) general health of epithelial tissues
Ans: (c)
Q619. Silk is obtained from—
(a) Mulberry tree
(b) Saliva of the silk worm
(c) Larvae of silk worm
(d) Cocoon of silk worm
Ans: (*)
Q620. In a human body, the longest bone is in the
(a) vertebral column
(b) thigh
(c) rib cage
(d) arm
Ans: (b)
Q621. Rinderpest disease of Cattle is caused by
(a) Insects
(b) Bacteria
(c) Virus
(d) Protozoa
Ans: (c)
Q622. Who among the following have venous heart?
(a) Mammals
(b) Reptilians
(c) Fishes
(d) Amphibians
Ans: (c)
Q623. Bio – diesel is mostly produced by :
(a) Myrtaceae
(b) Malvaceae
(c) Liliaceae
(d) Euphorbiaceae
Ans: (d)
Q624. Allosomes are
(a) cell organelles
(b) plant hormones
(c) alleles
(d) sex chromosomes
Ans: (d)
Q625. The following sugar gives energy most readily
(a) Lactose
(b) Cellulose
(c) Maltose
(d) Glucose
Ans: (d)
Q626. Which of the following is the largest living bird ?
(a) Eagle
(b) Peacock
(c) Ostrich
(d) Kiwi
Ans: (c)
Q627. What is the main purpose of white blood corpuscles?
(a) to carry nutrients
(b) to combat infection
(c) to carry oxygen
(d) to give strength
Ans: (b)
Q628. The parts of human body affected by Pyria are:
(a) eyes
(b) small intestine
(c) teeth and gums
(d) large intestine
Ans: (c)
Q629. Hydrogen peroxide is an effective sterilizing agent. Which one of the following product results when it readily loses active oxygen?
(a) Nascent Hydrogen
(b) Water
(c) Hydrogen
(d) Ozone
Ans: (b)
Q630. What is ‘Biodiversity’ ?
(a) Many types of flora & fauna in one forest
(b) Many types of flora and fauna in many forests
(c) Many population of one species in one forest
(d) All the above are true.
Ans: (a)
Q631. Ginger is a modified
(a) roof
(b) leaf
(c) tendril
(d) stem
Ans: (d)
Q632. Wisdom teeth is the :
(a) 1st molar teeth
(b) 2nd molar teeth
(c) 3rd molar teeth
(d) 4th molar teeth
Ans: (c)
Q633. If the radius of blood vessels of a person decreases his/her blood pressure will
(a) increase
(b) decrease
(c) remain unaffected
(d) increase for males and decrease for females
Ans: (a)
Q634. Cancer is a disease where we find uncontrolled
(a) cell division
(b) cell swelling
(c) cell inflammation
(d) cell deformity
Ans: (a)
Q635. A test tube baby means :
(a) a baby grown in a test tube.
(b) embryo fertilised in uterus and developed in test tube.
(c) embryo fertilised and developed in uterus.
(d) fertilisation in vitro and then transplantation in the uterus.
Ans: (d)
Q636. Which of the following prevents bleeding of gums ?
(a) Ascorbic acid
(b) Vitamin B
(c) Nicotinamide
(d) Thiamine
Ans: (a)
Q637. The Particulate Matter (PM-10) exhaled from the pol luted atmosphere is often filtered out during the process of
(a) Coughing
(b) Sneezing
(c) A and B
(d) Urination
Ans: (b)
Q638. Mycobacterium leprae is a
(a) Bacillus
(b) Coccus
(c) Spiral
(d) Spore
Ans: (a)
Q639. Which vitamin deficiency causes the disease, Pernicious anaemia ?
(a) Vitamin B5
(b) Vitamin B12
(c) Vitamin B6
(d) Vitamin C
Ans: (b)
Q640. What determines the sex of a child ?
(a) Chromosomes of the father
(b) Chromosomes of the mother
(c) Rh factor of the parents
(d) Blood group of the father
Ans: (a)
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