10th Standard Syllabus & Materials
10th Standard
TN 10th Social Science ECO - Industrial Clusters in Tamilnadu - New Important Questions And Answers Study Material - QB365 Set A
NEW10th Standard
TN 10th Social Science ECO - Government and Taxes - New Important Questions And Answers Study Material - QB365 Set A
NEW10th Standard
TN 10th Social Science ECO - Food Security and Nutrition - New Important Questions And Answers Study Material - QB365 Set A
NEW10th Standard
TN 10th Social Science ECO - Globalization and Trade - New Important Questions And Answers Study Material - QB365 Set A
NEW10th Standard
TN 10th Social Science ECO - Gross Domestic Product and its Growth : an Introduction - New Important Questions And Answers Study Material - QB365 Set A
NEW10th Standard
TN 10th Social Science CIV - India's International Relations - New Important Questions And Answers Study Material - QB365 Set A
Published on: 03/07/2021
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Questions + Answers key
Take MCQ Science Test1.
What is monohybrid cross?
2.
Mention the symptoms seen in the case of Down's syndrome.
3.
Differentiate diploid and haploid condition.
4.
State the Law of Independent Assortment
5.
Why do all the gametes formed in human females have an X - chromosome?
1.
Crosses involving inheritance of only one pair of contrasting characters are called monohybrid crosses. For example a cross between single pair of contrasting trait such as tall and dwarf plant.
2.
(i) It is a genetic condition in which there is an extra copy of chromosome 21 (Trisomy 21).
(ii) Mental retardation, delayed development, behavioural problems, weak muscle tone, vision and hearing disability are some of the conditions seen in these children.
3.
(i) In the body cells of sexually reproducing organisms, the chromosomes generally occur in pairs. This condition is called diploid (2n).
(ii) The gametes produced by the organisms contain a single set of chromosomes. Hence, the gametes are said to be haploid (n).
4.
Law of independent assortment states: "In case of inheritance of two or more pairs of characters simultaneously, the factors or genes of one pair assort out independently of the other pair
5.
Human females. have two similar sex chromosomes (XX). Hence, during meiosis at the time of gamete formation, one X - chromosome enters each gamete. Hence, all the gametes possess an X - chromosome. Therefore human females are said to be homogenetic.
10th Standard Syllabus & Materials
10th Standard
TN 10th Social Science CIV - India's Foreign Policy - New Important Questions And Answers Study Material - QB365 Set A
NEW10th Standard
TN 10th Social Science CIV - State Government - New Important Questions And Answers Study Material - QB365 Set A
NEW10th Standard
TN 10th Social Science CIV - Central Government - New Important Questions And Answers Study Material - QB365 Set A
NEW10th Standard
TN 10th Social Science CIV - Indian Constitution - New Important Questions And Answers Study Material - QB365 Set A
Tamilnadu Stateboard 10th Standard Subjects
Tamilnadu Stateboard Standards
