11th Botany - Book Back Answers - Chapter 7 - English Medium Guides

 

 

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Tamil Nadu Board 11th Standard Botany - Chapter 7: Book Back Answers and Solutions

    This post covers the book back answers and solutions for Chapter 7 – Botany from the Tamil Nadu State Board 11th Standard Botany textbook. These detailed answers have been carefully prepared by our expert teachers at KalviTips.com.

    We have explained each answer in a simple, easy-to-understand format, highlighting important points step by step under the relevant subtopics. Students are advised to read and memorize these subtopics thoroughly. Once you understand the main concepts, you’ll be able to connect other related points with real-life examples and confidently present them in your tests and exams.

    By going through this material, you’ll gain a strong understanding of Botany Chapter 7 along with the corresponding book back questions and answers (PDF format).

Question Types Covered:

• 1 Mark Questions: Choose the correct answer, Fill in the blanks, Identify the correct statement, Match the following 
• 2 Mark Questions: Answer briefly 
• 3, 4, and 5 Mark Questions: Answer in detail

All answers are presented in a clear and student-friendly manner, focusing on key points to help you score full marks.

All the best, Class 11 students! Prepare well and aim for top scores. Thank you!

Chapter 7: Cell cycle 

I. Multiple Choice Questions

1. The correct sequence in cell cycle is
a. S-M-G1-G2
b. S-G1-G2-M
c. G1-S-G2-M
d. M-G-G2-S
Answer Key:
c. G1-S-G2-M

2. If mitotic division is restricted in G1 phase of the cell cycle then the condition is known as
a. S Phase
c. M Phase
b. G2 Phase
d. Go Phase
Answer Key:
d. Go Phase

3. Anaphase promoting complex APC is a protein degradation machinery necessary for proper mitosis of animal cells. If APC is defective in human cell, which of the following is expected to occur?
a. Chromosomes will be fragmented
b. Chromosomes will not condense
c. Chromosomes will not segregate
d. Recombination of chromosomes will occur
Answer Key:
c. Chromosomes will not segregate

4. In S phase of the cell cycle
a. Amount of DNA doubles in each cell
b. Amount of DNA remains same in each cell
c. Chromosome number is increased
d. Amount of DNA is reduced to half in each cell
Answer Key:
a. Amount of DNA doubles in each cell

5. Centromere is required for
a. transcription
b. crossing over
c. Cytoplasmic cleavage
d. movement of chromosome towards pole
Answer Key:
d. movement of chromosome towards pole

6. Synapsis occur between
a. mRNA and ribosomes
b. spindle fibres and centromeres
c. two homologous chromosomes
d. a male and a female gamete
Answer Key:
c. two homologous chromosomes

7. In meiosis crossing over is initiated at
a. Diplotene
b. Pachytene
c. Leptotene
d. Zygotene
Answer Key:
b. Pachytene

8. Colchicine prevents the mitosis of the cells at which of the following stage
a. Anaphase
c. Prophase
b. Metaphase
d. interphase
Answer Key:
b. Metaphase

9. The paring of homologous chromosomes on meiosis is known as
a. Bivalent
c. Disjunction
b. Synapsis
d. Synergids
Answer Key:
c. Disjunction

II. Short answer questions

aa

III. Long answer questions

a

IV. Exercise

a