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Biology In Human Welfare - Biology Questions asked by Filo students

Question 61

Statement-1: If the fallopian tube in the male is blocked, sperm transfer will be prevented. Statement-2: If the vas deferens in the female is blocked, the egg will not be able to reach the uterus. Only One Correct Answer

Only statement-2 is incorrect
Only statement- 1 is incorrect
Both the statements are incorrect
Both the statements are correct

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Question 62

All of the following are environment-friendly act, except Only One Correct Answer

Taking public transport instead of personal vehicle
Using stairs in place of lift
Wearing extra sweater instead of using heater
Using petrol in place of CNG in automobiles

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Question 63

English(En) 24 ↑eview Amongst given products how many is are stored especially in old xylem of plants? Oxygen, Resins, Gums, Carbon dioxide Only One Correct Answer (i)

Two
One
Four
Three

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Question 64

Section - A Decomposers act upon dead and decay organisms and convert them into simpler forms. These simple substances get mixed up in the soil and are used as nutrients by the producers. From producers it goes to consumers and so on. They maintain the balance in the ecosystem and provide space for new life in ecosystem shown in OR Ozone layer absorbs most of the harmful ultraviolet radiations from the sun to the earth. It is formed high up in the atmosphere by the action of ultraviolet radiation on oxygen gas. Chlorofluorocarbons are the synthetic chemicals responsible for the drop of amount of ozone in the atmosphere. (a) If the configuration is

2, 8, 4

it means that it belongs to

3^{rd}

period and 14 th group. (b) The name of element is Silicon. It is a non-metal so, it is a poor conductor of electricity.

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Question 65

of them die from it annually. The mechanisms of cancer or oncogenic transformation of cells, have been some of the most intense areas of

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Question 66

er or oncogenic transformation of cells, een some of the most intense areas of lifferentiation is highly controlled and s breakdown of these regulatory

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Question 67

Select the character which is not related to knee jerk reflex action.

Very rapid in speed
Automatic in nature,
Stereotyped behaviour
Presence of interneuron

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Question 68

Most of the petrocrops belong to family.

Leguminoase
Euphorbiaseae
Rutaceae
Malvaceae

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Question 69

.tlJ JO 4G

\approx

12 : 16

English(En) 25

\overset{w}{^}

Review The dlalysing fluld which is used in artificial kidney has Only One Correct Answer (i)

Higher amount of nitrogenous wastes
Higher osmotic pressure than blood
Lower osmotic pressure than blood
Same osmotic pressure as blood

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Question 70

19 Identify

X

and

Y

of the given figure and select the correct option.

X Y

Seminal Vas

Veside deferens
Testis Scrotum
Ureter Testis
Vas
deferens Testis

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Question 71

181. Insufficient quantify of vitamins in diet affect directly formation of all except

(I) $NAD$
(2) FAD
(3) Favin mononucleotide
(4) Lipids

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Question 72

The function of Pineal gland is

Regulating menstruation
Maintaining sleep-wake cycle
Regulating temperature
All of these

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Question 73

When you look around. you see both living and non-living things. You must have wondered and asked yourself - "what is it that makes an organism living, or what is it that an inanimate thing does not have which a living thing has'? The answer to this is the presence of the basic unit of life - the cell in all living organisms. All organisms are composed of cells. Some are composed of a single cell and are called unicellular organisms while others. like us, composed of many cells, are called multicellular organisms. 8.1 WHAT IS A CELL?

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Question 74

EXERCISES Hotoxy Conirol AND COORDINATION 1. Briefly describe the structure of the following:

Brain
Eye
Ear

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Question 75

1.3.7 Kingdom hiehest category called Kingdom Anim system of animals. The Kingdow. Plant distinet. and comprises all plants fromer on the e Henceforth, we will refer to these turg plant kingrioms. The taxonomic categories from species to kingd shown in ascending order starting with specles These are broad categories. However, taxonanas developed sub-categories in this hierarcl sound and scientific placement of varicus tasn Look at the hierarchy in Figure 1 of arrangement? Say, for example, as

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Question 76

Lacteals are central lymph vessels which are found in

Liver
Pancreas
Villi
Spleen

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Question 77

Calculate the number of protons, neutrons and electrons in

_{19}^{39} K

. 7. Which of the following species has maximum charge to mass ratio?

$D^{+}$
$H^{+}$
$He^{+}$
$He^{2 +}$

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Question 78

blood. A reduction in their number can lead to clotting disorders whigh will lead to excessive loss of blood from the body. 18. 1.3 Blood Groups As you know, blood of human beings differ in certain aspects though if appears to be similar. Various types of grouping of blood has been done. world.

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Question 79

Iferent individuals contain two natural esponse to antigens). The distribution four groups of blood, A, B, AB and o g.1.4 Coagulation of Blood know that during blood transfusion, fa donor has to be carefully matched iou know that when you cut your finger or hurt yourself, your wound Iy blood transfusion to avoid severe joes not continue to bleed for a long time; usually the blood stops flowing

RBC)

. The donor's compatibility is ster sometime. Do you know why? Blood exhibits coagulation or clotting in response to an injury or trauma. This is a mechanism to prevent excessive loss of blood from the body. You would have sbserved a dark of time. It is a clot or coagulam formed mainly of a network of threads called fibrins in which dead and damaged formed elements of blood are trapped. Fibrins are formed by the conversion of inactive fibrinogens in the plasma by the enzyme thrombin. Thrombins, in turn are formed from another inactive substance present in the plasma called prothrombin. An enzyme complex, thrombokinase, is required for the above reaction. This complex is formed by a series of linked enzymic reactions (cascade

that group ’ O ’ blood can up and hence ’O’ group process) involving a number of factors present in the plasma in an igactive state. An injury or a trauma stimulates the platelets in the blood to release certain factors which activate the mechanism of coagulation. Certain

other groups of blood. factors released by the tissues at the site of injury also can initiate other groups of blood. factors released by the tissues at the site of injury also can int

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Question 80

H.gasirotmestinal wacte 11i urogenital wact fhoose the correct option

a) a) Allerg

Iand!

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