11th Botany - Book Back Answers - Chapter 13 - English Medium Guides

 

 

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Tamil Nadu Board 11th Standard Botany - Chapter 13: Book Back Answers and Solutions

    This post covers the book back answers and solutions for Chapter 13 – 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 13 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 13 : Photosynthesis

I. Multiple Choice Questions

1.Assertion (A): Increase in Proton gradient inside lumen responsible for ATP synthesis
Reason (R):    Oxygen evolving complex of PS I located on thylakoid membrane facing Stroma, releases H⁺ ions
a. Both Assertion and Reason are True.
b. Assertion is True and Reason is False.
c. Reason is True and Assertion is False.
d. Both Assertion and Reason are False.
Answer Key:
b. Assertion is True and Reason is False.

2. Which chlorophyll molecule does not have a phytol tail?
a. Chl-a
b. Chl-b
c. Chl- c
d. Chl-d
Answer Key:
c. Chl- c

3. The correct sequence of flow of electrons in the light reaction is
a. PS II, plastoquinone, cytochrome, PS I, ferredoxin.
b. PS I, plastoquinone, cytochrome, PS II ferredoxin.
c. PS II, ferredoxin, plastoquinone, cytochrome, PS I.
d. PS II, plastoquinone, cytochrome, PS II, ferredoxin.
Answer Key:
a. PS II, plastoquinone, cytochrome, PS I, ferredoxin.

4. For every CO₂ molecule entering the C3 cycle, the number of ATP & NADPH required
a. 2ATP + 2NADPH
b. 2ATP + 3NADPH
с. ЗАТР + 2NADPH
d. 3ATP+3NADPH
Answer Key:
с. ЗАТР + 2NADPH

5. Identify true statement regarding light reaction of photosynthesis.
a. Splitting of water molecule is associate with PS I.
b. PS I and PS II involved in the formation of NDPH+H⁺
c. The reaction center of PS I is Chlorophyll a with absorption peak at 680 nm.
d. The reaction center of PS II is Chlorophyll a with absorption peak at 700 nm.
Answer Key:
b. PS I and PS II involved in the formation of NDPH+H⁺

II. Short answer questions

aa

III. Long answer questions

a

IV. Exercise

a