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Solution for Class 11, Biology

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2.2.4 Slime Moulds sume datulds are saprophy tic protists. The body moves along decaying twigs and leaves engulfing organic material. Under suitable conditions, they form an aggregation called plasmodium which may grow and spread over several feet. During unfavourable conditions, the plasmodium differentiates and forms fruiting bodies bearing spores at their tips. The spores possess true walls. They are extremely resistant and survive for many years, even under adverse conditions. The spores are dispersed by air currents.

Topic:

Diversity in the Living World

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EXERCISES 1. State the location and function of different types of meristems.

Topic:

Structural Organisation in Plants and Animals

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Q21. Parapodia or setae is absent in : *

Hirudinaria
Nereis
Lumbricus
Pheretima

Topic:

Biology in Human Welfare

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Which of these is similar in meaning to the word 'desperate'? (a) composed (b) cheerful (c) fearful (d) frantic Q.10 Answer the following questions in about 30 words-

Why was the grandmother sad when the author was admitted in an English school?
When was the link of the friendship between the author and his grandmother snapped?
What did the grandmother do when the author returned from abroad after five years?
What did grandmother used to feed village dogs and why?
Why did grandmother carry stale chapatis with her?

Topic:

Ecology

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Vascular coat of the eye which is bluish in colour and analogous to the dull black paint within the camera is called

{Sclera,Choroid,Retina,Lens}

Topic:

Human Physiology

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A. Plants have no circulatory system? Then how cells manage intercellular transport?

Topic:

Structural Organisation in Plants and Animals

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Acquired immunity is found only in

Invertebrates
Vertebrates
Mammals
Man

Topic:

Human Physiology

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X

' is a gas which is evolved during the thermal decomposition of zinc carbonate. Gas '

X

' will not evolve during the Only One Correct Answer (i)

Decomposition of limestone
Burning of coal
Decomposition of lead nitrate
Reaction of baking soda and dilute hydrochloric acid

Topic:

Diversity in the Living World

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Views: 5,111

English(En) 30 ఓ Review Kulhs is a local system of canal irrigation evolved in Only One Correct Answer

Karnataka
Punjab
Uttar Pradesh
Himachal Pradesh

Topic:

Biology in Human Welfare

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Question 10

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English(En) 24 iे Review Attached earlobe is an example of Only One Gorrect Answer

Dominant trait
Recessive trait
Acquired trait
Non-inheritable trait

Topic:

Cell: Structure and Functions

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Question 11

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Answer in one sentence. 6 Mark

Define metabolism.
Cycas belongs to which Division?
Who proposed the five kingdom system of classification?
What are coenocytic hyphae?
What are Hornworts?
Define cell.

Topic:

Cell: Structure and Functions

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Question 12

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Define metabolism. ii) Cycas belongs to which Division? iii) Who proposed the five kingdom System of classification? iv) What are coenocytic hyphae? v) What are Hornworts? vi) Define cell. Attempt any Five of the following

Write a note on plant cell wall.
Distinguish between Plant cell and Animal cell
Give the significance of inflorescence.
Write a note on hypogynous flower.
Distinguish between Racemose and Cymose.
Define monoecious plant and Dioecious plant.

Topic:

Cell: Structure and Functions

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Question 13

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Why Bryophytes are called amphibian of plant kingdom? 8) Distinguish between Bryophyta and Pteridophyta. Attempt any Three of the following. ogMak.

Give the general characters of Gymnosperms.
Differentiate between Prokaryotic cell and Eukaryotic cell.
Write a note on useful and harmful bacteria
Give the general characters of kingdomfungi.
Draw neat and labelled of funaria (Moss).

Topic:

Cell: Structure and Functions

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Question 14

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112. Which cell structure occurs in epidermal cells of human but not in epidermal cells of leaves?

{"a. Mitochondria","b. Chloroplast","b. Centriole","d. Cell membrane"}

Topic:

Cell: Structure and Functions

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Question 15

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2/N 731 1. (A) Write the correct alternative : 5 (i) Gold plated ornaments is the example of

Electroplating
Alloying
Arodizing
Galvanining

Topic:

Diversity in the Living World

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Question 16

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All India Aakash Test Series for NEET-2022 101. Inheritance of only one of the parental trait in a monohybrid cross in the

F_{1}

generation is explained by

Law of segregation
Law of dominance
Law of independent assortment
Test cross

Topic:

Genetics and Evolution

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Question 17

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Read the following passuge and auswe of the greatest emperors oi wik wo Historians say, "Ashoka became one of the greatest emperors orter and defeated kings of many states. Once he attacked Kalinga. To conquer Kalinga proved to be a difficully task to him. Thousands of innocent people were killed. The blood of innocent people touched Ashoka's heart. He gave up fighting and adopted Bolic. Spread of budd

Who was Ashoka?
What did the historians say about him?
What proved to be a difficult task for him?
Why did Ashoka adopt Buddhism?

Topic:

Human Physiology

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Question 18

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OR Read the following passage and answer the questions that follow: Sports and games make our bodies strong, prevent us form getting too fat, and keep us healthy. They give us valuable practice in making eyes, brain and muscles work together. In tennis, our eyes see the ball coming, judge its speed and direction, and pass the information on to the brain. The brain then has to decide what to do, and it sends orders to the muscles, of the arms, legs and so on, so that the bail is met and hit back where it ought to go. All, this must happen with very great speed, and only those who, have had a lot of who work with their brain most of the day, the practice of such skills is especially useful. Questions:

What do games and sports do?

Topic:

Human Physiology

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Question 19

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Guava, Cucumber, Plum, Rose, Peach, Brinjal, China rose

2
4
3
5

Topic:

Plant Physiology

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Question 20

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When a flower can be divided into two equal radial halves in any radial plane passing through the centre, then the flower is said to be [NCERT Pg. 72]

Zygomorphic
Actinomorphic
Asymmetric
Irregular

Topic:

Plant Physiology

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