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 என்னுயிர் என்பேன் -துணைப்பாடம் - இசைத்தமிழர் இருவர் Important Questions And Answers Study Material - QB365 Set A

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TN 11th Tamil மொழி கலை -செய்யுள் - ஒவ்வொரு புல்லையும் 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 - துணைப்பாடம் - வாடிவாசல் 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 - Tissue and Tissue System 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

chapter: - Model Question paper

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Questions:

Multiple Choice Question

10 x 1 = 10

In insectivorous plants the ____________ help to trap insects.

(a)

Subsidiary cells

(b)

Trichomes

(c)

Root hairs

(d)

Leaf cells

Conjunctive tissue __________

(a)

covers the phloem

(b)

covers the vascular bundle

(c)

covers the stele

(d)

separates xylem and phloem

Assertion (A): In grasses the bundle sheath is called Kranz sheath.
Reason (R): It is involved in photosynthesis.

(a)

A and R are right

(b)

A and R are wrong

(c)

R does not Explain A

(d)

A is right and R is wrong

Atactostele is characteristic of ___________

(a)

Monocot leaf

(b)

Monocot stem

(c)

Dicot root

(d)

Dicot Stem

A meristem which divides in all planes is called __________

(a)

Intercalary meristem

(b)

Lateral meristem

(c)

Plate menstem

(d)

Mass meristem

Select the incorrect statement about casparian strips

(a)

These are bands of thickenings along the radial and tangential walls of endodermal cells

(b)

They prevent plasmolysis of endodermal cells

(c)

These are composed of lignin, suberin and tannins.

(d)

It is not found opposite to proto xylem points

Identify the correctly matched pair.

(a)

Bicollateral vascular bundles - cucurbita pepo

(b)

Amphicribal vascular bundles - dracaena

(c)

Amphivasal vascular bundles - prunus

(d)

Open vascular bundles - stem of Zea mays

Grafting is successful in dicots but not in monocots because the dicots have _______.

(a)

Vascular bundles arranged in a ring

(b)

Cambium for secondary growth

(c)

Vessels with elements arranged end to end

(d)

Cork cambium

In Gymnosperms, the activity of sieve cells are controlled by _____.

(a)

Nearby sieve tube members

(b)

Phloem parenchyma cells

(c)

Nucleus of companion cells

(d)

Nucleus of albuminous cells

10.

Refer to the given figure and select the correct statement.

i. A, B, and C are histogen of shoot apex
ii. A Gives rise to medullary rays.
iii. B Gives rise to cortex
iv. C Gives rise to epidermis