Practice Biology - general science mcq Online Quiz (set-1) For All Competitive Exams
Q-1) Which element is required in comparatively least quantity for the growth of plant?
(a)
(b)
(c)
(d)
Q-2) Total number of ATP consume during Kreb’s cycle is
(a)
(b)
(c)
(d)
Q-3) A typical human ribcage consists of how many ribs?
(a)
(b)
(c)
(d)
Q-4) Which one of the following is primarily concerned with cell division ?
(a)
(b)
(c)
(d)
Q-5) Percentage of oxygen supplied by haemoglobin is
(a)
(b)
(c)
(d)
About 97% of oxygen is carried in combination with haemoglobin of the erythrocytes to form oxyhaemoglobin.
Q-6) Which of the following commonly called emergency gland of body?
(a)
(b)
(c)
(d)
Adrenal or suprarenal glands are called the emergency glands of the body. The medullary portion of these glands secretes hormones adrenaline and noradrenaline. Their secretion is stimulated by the sympathetic nervous system.
These hormones are secreted in emergency conditions like anger, injury, cold, emotional stress, fear etc, hence also called hormones for fight or flight.
Q-7) Which of the following plant is found to have minimum transpiration ?
(a)
(b)
(c)
(d)
Cactus is a xerophytic plant and have sunken stomata to reduce the rate of transpiration, confined to lower epidermis.
Q-8) The toxic effect of CO is due to its greater affinity for haemoglobin as compared to O2 approximately by
(a)
(b)
(c)
(d)
Q-9) When ants bite, they injec
(a)
(b)
(c)
(d)
Q-10) The involvement of which one of the following is essential in the control of blood sugar?
(a)
(b)
(c)
(d)
Q-11) Which part of the alimentary canal does not secrete any enzyme?
(a)
(b)
(c)
(d)
Q-12) Study the following statements : - Silviculture is the branch of Botany in which we study about development of forest.
- Branch of Agriculture concerned with the production of crops called as Agronomy.
- Agrostology is the study of grass.
- Spermology is the study of fruits.
Which of the above statements are correct?
(a)
(b)
(c)
(d)
Spermology is the collection and study of seeds.
Q-13) Consider the following statements.- Tapeworm is a hermaphrodite.
- Round-worm has separate sexes.
- Filaria is caused by a nematode.
- Guinea-worm is an annelid.
Which of these are correct?
(a)
(b)
(c)
(d)
Q-14) Largest number of neuron cell is present in human body in
(a)
(b)
(c)
(d)
Q-15) Due to accumulation of which one of the following, joggers experience pain in their leg muscles after running?
(a)
(b)
(c)
(d)
Q-16) Which of the following would not have an effect on flowering of a particular plant species?
(a)
(b)
(c)
(d)
Q-17) Which one is not correct ?
(a)
(b)
(c)
(d)
Whale is ureotelic.
Q-18) Functional and structural unit of kidney is
(a)
(b)
(c)
(d)
Q-19) Bones are mainly made up of
(a)
(b)
(c)
(d)
Bone is the solid rigid strong connective tissue. Its matrix consists of ossein protein and mineralization of matrix occurs by calcium- phosphate salts. This gives rigidity and strength to bones.
Q-20) Hydroponics is a technique in which plants are grown in
(a)
(b)
(c)
(d)