11th Standard Syllabus & Materials

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TN 11th Tamil இயற்கை வேளாண்மை,சுற்றுச்சூழல் -செய்யுள் - மனோன்மணீயம் Important Questions And Answers Study Material - QB365 Set A

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TN 11th Tamil பீடு பெற நில் - இலக்கணம் - பகுபத உறுப்புகள் Important Questions And Answers Study Material - QB365 Set A

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TN 11th Tamil பீடு பெற நில் - செய்யுள் - குறுந்தொகை Important Questions And Answers Study Material - QB365 Set A

11th Standard Botany - Photosynthesis English Medium Free Online Test One Mark Questions 2020 - 2021

Published on: 11/11/2020

Download Tamil Nadu 11th Standard Biology question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.

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Std: 11th Standard - Biology

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Questions:

Multiple Choice Question

10 x 1 = 10

_____________is considered to be a promising source of energy in future.

(a)

CNG

(b)

LPG

(c)

Methane

(d)

Hydrogen

Kranz anatomy is characteristic of _________ plants.

(a)

C₃

(b)

C₂

(c)

C₄

(d)

C₃ and C₄

RUBISCO constitutes______________ of chloroplast protein.

(a)

17%

(b)

20%

(c)

16%

(d)

21 %

The intermediate from kreb's cycle which is used for chlorophyll production is___________.

(a)

Fumaric acid

(b)

Isocitric acid

(c)

Succinic acid

(d)

oxaloacetic acid

Identify incorrect pair regarding C₄cycle.

(a)

Initial carboxylation - mesophyll cells

(b)

Primary CO₂ acceptor - PEP

(c)

First product - OAA

(d)

Bundle sheath cells - with granum

The creation of proton gradient across the thylakoid membrane is a result of _________

(a)

Decrease in proton number in stroma

(b)

Accumulation of protons in the lumen

(c)

Decrease in pH in the lumen

(d)

All of the above

The correct sequence of ftow of electrons in the light reaction is _________

(a)

PS II, plastoquinone, cytochrome, PSI, ferredoxin

(b)

PS I, plastoquinone, cytochrome, PS II ferredoxin

(c)

PS II, ferredoxin, plastoquinone, cytochrome, PSI

(d)

PS I, plastoquinone, cytochrome, PS II ferredoxin

The photosynthetic pathway is represented in a schematic representation. Mark the correct option.

(a)

It represents cactus plants where A occurs in the mesophyll & B in the bundle sheath cells

(b)

It represents sugarcane plants where A occurs in the mesophyll & B in the bundle sheath cells

(c)

It represents pineapple plants where both A & B occur in the mesophyll cells

(d)

It represents maize plants where A & B are separated only temporarily

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 NADPH + 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.

10.

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.