JOIN ADRE 2.0 Telegram Group

CSAT Prelims Biology - General Knowledge Questions and Answers for UPSC Exam | Page-1

Questions
1 Regular intake of fresh fruits and vegetables is recommended in the diet since they are a good source of antioxidants. How do antioxidants help a person maintain health and promote longevity?
A They neutralize the free radicals produced in the body during metabolism
B They activate certain genes in the cells of the body and help delay the ageing process
C They activate then enzymes necessary for vitamin synthesis in the body an help prevent vitamin deficiency
D They prevent excessive oxidation of carbohydrates, fats and proteins in the body and help avoid unnecessary wastage of energy

Answer: Option [A]
2 Which one of the following statements is not correct?
A Milk contains none of the B-vitamins.
B One of the symptoms of scurvy is pain in the joints.
C Vitamin-A (retinol) deficiency leads to dry and scaly skin.
D Vitamin B1 (thiamine) deficiency can lead to heart failure.

Answer: Option [A]
Advertisement
Article and Schedule Quiz Start Test!

DOWNLOAD CURRENT AFFAIRS PDF FROM APP

3 Which of the following cell organelles play the most significant role in protein synthesis?
A Lysosome and Centrosome
B Endoplasmic reticulum and Ribosome
C Lysosome and mitochondria
D Golgi apparatus and Mitochondria

Answer: Option [B]
4 A person with ‘AB’ blood group is sometimes called a universal recipient because of the
A presence of antibodies in his blood
B lack of both antigens and antibodies in his blood
C lack of antigen in his blood
D lack of antibodies in his blood

Answer: Option [D]
5 Many transplanted seedling do not grow because
A the new soil does not contain favourable minerals
B most of the root hair grip the new soil too hard
C most of the root hairs are lost during transplantation
D leaves get damaged during transplantation

Answer: Option [C]
6 When the bark of a tree is removed in a circular fashion all around near its base, it gradually dries up and dies because?
A Roots are starved of energy.
B Tree is infected by soil microbes.
C Water from soil cannot rise to aerial parts.
D Roots do not receive oxygen for respiration.

Answer: Option [A]
7 Some species of plants are insectivorous. Why?
A They cannot synthesize certain vitamins themselves and depend on the insects digested by them.
B They have remained in that particular stage of evolution as living fossils, a link between autotrophs and heterotrophs.
C Their growth in shady and dark places does not allow them to understake sufficient photosynthesis and thus they depend on insects for nutrition.
D They are adapted to grow in nitrogen deficient soils and thus depend on insects for sufficient nitrogenous nutrition.

Answer: Option [D]
8 Living organisms require at least 27 elements, of which 15 are metals. Among these, those required in major quantities, include
A sodium, magnesium, copper and manganese
B potassium, sodium, magnesium and calcium
C potassium, molybdenum, copper and calcium
D potassium, manganese, copper and calcium

Answer: Option [B]
9 A pesticide which is a chlorinated hydrocarbon is sprayed a food crop. The food chain is: Food crop-Rat-Snake-Hawk. In this food chain, the highest concentration of the pesticide would accumulate in which one of the following?
A Food crop
B Rat
C Snake
D Hawk

Answer: Option [D]
10 “Metastasis” is the process by which
A cells divide rapidly under the influence of drugs
B cancer cells are successfully inhibited to divide any further
C cancer cells spread through the blood or lymphatic system to other sites or organs
D the chromosomes in cells nuclei are attached to the spindle before moving to the anaphase poles

Answer: Option [C]

ADRE 2.0 FULL LENGTH MOCK TEST

Take Mock Tests

Missiles Mock Test Start Test!
SSC MTS Mock Test Start Test
IBPS CLERK MOCK TEST Start Test
SSC MTS 2022 JULY 26 Shift 1 (ENGLISH) Start Test!
SSC GD Previous Year Paper 2021 Nov 17 Shift - I (Hindi) Start Test!
SSC CGL Tier - 1 PYP 2022 April 21 Shift- 1 (ENGLISH) Start Test!
MPSC PAPER I MOCK TEST 1 (ENGLISH) Start Test!
IB Security Assistant Mock test 1 (english) Start Test!
UP POLICE CONSTABLE MOCK TEST 1 Start Test!
DELHI POLICE CONSTABLE MOCK TEST 1 (HINDI) Start Test!

Chapters

Read More Biology Questions

Advertisement
Assam Direct Recruitment Test Series