Match the articles given in columns A and B (single matching): Column A Column B (a) Planaria (i) Molecular Biology (b) DNA (ii) 1953 (c) Miller and Urey (iii) Natural selection (d) Darwin (iv) Rudimentary eyes

a - i v Rudimentary eyes of Planaria is transmitted to the next generation as it is a genetic trait. Rudimentary eyes are non-functional. A flatworm named Planaria has very simple ‘eyes’ that are really just eye-spots which detect light. The eyeball may be absent in them, complex iris, rudimentar y cornea and ot her underdeveloped features. b - i Molecular Biology is the field of biology that studies the composition, structure and interactions of cellular molecules – such as nucleic acids and proteins – that carry out the biological processes essential for the cell's functions and maintenance. c - i i In 1953 , Stanley Miller reported the production of biomolecules from simple gaseous starting materials, using an apparatus constructed to simulate the primordial Earth's atmosphere-ocean system. d - i i i Natural selection is the process through which species adapt to their environments. It is the engine that drives evolution. English naturalist Charles Darwin developed the idea of natural selection after a five-year voyage to study plants, animals, and fossils in South America and on islands in the Pacific. Column A Column B (a) Planaria (iv) Rudimentary eyes (b) DNA (i) Molecular Biology (c) Miller and Urey (ii) 1953 (d) Darwin (iii) Natural selection

Match the contents of columns I, II and III (double matching): Column I Column II Column III (a) Sex (i) Adaptive p. New species (b) Variations (ii) Male gamete q. Jointed appendages (c) Genetic drift (iii) Palaeozoic arthropod r. Conception (d) Trilobite (iv) New Variations s. Increase

a-ii-r, In human, sex of a child is determined by the male gamete that fuses to form a zygote during fertilization. b-i-s, Variations can provide better adaptability to the existing environment. They function as preadaptations to help the organisms survive in adverse conditions. c-iv-p, Genetic drift is the random change in gene frequency in a small isolated population that may result in the formation of new species. d-iii-q, Trilobites form one of the earliest-known groups of arthropods. The body segment of each trilobite have a pair of jointed appendages. Column I Column II Column III (a) Sex (ii) Male gamete r. Conception (b) Variations (i) Adaptive s. Increase (c) Genetic drift (iv) New Variations p. New species (d) Trilobite (iii) Palaeozoic arthropod q. Jointed appendages

E M B I B E

DINESH SUPER SIMPLIFIED SCIENCE BIOLOGY>Chapter 4 - Heredity and Evolution>SELECTION TYPE QUESTIONS

K.N. Bhatia and C.S. Mishra Solutions for Chapter: Heredity and Evolution, Exercise 1: SELECTION TYPE QUESTIONS

Author:K.N. Bhatia & C.S. Mishra

K.N. Bhatia Biology Solutions for Exercise - K.N. Bhatia and C.S. Mishra Solutions for Chapter: Heredity and Evolution, Exercise 1: SELECTION TYPE QUESTIONS

Attempt the practice questions on Chapter 4: Heredity and Evolution, Exercise 1: SELECTION TYPE QUESTIONS with hints and solutions to strengthen your understanding. DINESH SUPER SIMPLIFIED SCIENCE BIOLOGY solutions are prepared by Experienced Embibe Experts.

Questions from K.N. Bhatia and C.S. Mishra Solutions for Chapter: Heredity and Evolution, Exercise 1: SELECTION TYPE QUESTIONS with Hints & Solutions

EASY

10th CBSE

IMPORTANT

DINESH SUPER SIMPLIFIED SCIENCE BIOLOGY>Chapter 4 - Heredity and Evolution>SELECTION TYPE QUESTIONS>Q 8

Charles Darwin discovered the law of independent assortment.

EASY

10th CBSE

IMPORTANT

DINESH SUPER SIMPLIFIED SCIENCE BIOLOGY>Chapter 4 - Heredity and Evolution>SELECTION TYPE QUESTIONS>Q 9

Match the articles given in columns A and B (single matching):

Column A	Column B
(a) Planaria	(i) Molecular Biology
(b) DNA	(ii) 1953
(c) Miller and Urey	(iii) Natural selection
(d) Darwin	(iv) Rudimentary eyes

MEDIUM

10th CBSE

IMPORTANT

DINESH SUPER SIMPLIFIED SCIENCE BIOLOGY>Chapter 4 - Heredity and Evolution>SELECTION TYPE QUESTIONS>Q 10

Match the contents of columns I, II and III (double matching):

Column I	Column II	Column III
(a) Sex	(i) Adaptive	p. New species
(b) Variations	(ii) Male gamete	q. Jointed appendages
(c) Genetic drift	(iii) Palaeozoic arthropod	r. Conception
(d) Trilobite	(iv) New Variations	s. Increase