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1051.

Describe the changes that take place (I) around the rib cage (ii) diaphragm (iii) chest cavity, during inspiration. State the effect of these changes

Answer» Describe the changes that take place (I) around the rib cage (ii) diaphragm (iii) chest cavity, during inspiration. State the effect of these changes
1052.

Are individuals of all species either male or female (unisexual)? Or are there species which possess both the reproductive organs (bisexual)?

Answer» Are individuals of all species either male or female (unisexual)? Or are there species which possess both the reproductive organs (bisexual)?
1053.

Fragmentation is a mode of reproduction observed in _____________.

Answer»

Fragmentation is a mode of reproduction observed in _____________.


1054.

Where is iron present in our body?

Answer»

Where is iron present in our body?

1055.

The course of blood from the heart to the lungs and back to the heart is called

Answer»

The course of blood from the heart to the lungs and back to the heart is called


1056.

The heart is an ever functioning pumping house. Trace the path of the two part pumping mechanism starting from blood flowing into the body cells.

Answer»

The heart is an ever functioning pumping house. Trace the path of the two part pumping mechanism starting from blood flowing into the body cells.

1057.

a) What is Heart beat?b) What is pulse rate?

Answer»

a) What is Heart beat?

b) What is pulse rate?



1058.

what is rs nomenclature

Answer» what is rs nomenclature
1059.

Does budding occour in potatoes

Answer» Does budding occour in potatoes
1060.

Name any one plant which has nitrogen fixing rhizobium bacteria

Answer»

Name any one plant which has nitrogen fixing rhizobium bacteria

1061.

Higher yield and disease resistance are the desired characteristics a farmer would want in any crop. Scientists develop such varieties by hybridisation of two different crops. Such a hybridisation could be

Answer»

Higher yield and disease resistance are the desired characteristics a farmer would want in any crop. Scientists develop such varieties by hybridisation of two different crops. Such a hybridisation could be


1062.

Waste materials in fish is excreted in the form of _________ .

Answer»

Waste materials in fish is excreted in the form of _________ .

1063.

Why do mountaineers carry oxygen with them?

Answer»

Why do mountaineers carry oxygen with them?



1064.

What are endocrine glands? What is their importance? How they work along with the nervous system in the body?

Answer» What are endocrine glands? What is their importance? How they work along with the nervous system in the body?
1065.

A person was admitted to hospital as he had myocardial infarction. Cardiologist administers him with streptokinase. Why?

Answer»

A person was admitted to hospital as he had myocardial infarction. Cardiologist administers him with streptokinase. Why?



1066.

How does lymph help in the body's defence mechanism?

Answer»

How does lymph help in the body's defence mechanism?

1067.

Why plants can't absorb the nitrogen from the air ?

Answer»

Why plants can't absorb the nitrogen from the air ?

1068.

Which of the following is/are digestive gland(s)?

Answer»

Which of the following is/are digestive gland(s)?



1069.

If the amount of iodine is less in a person’s diet, he is likely to suffer from which of the following disease?

Answer» If the amount of iodine is less in a person’s diet, he is likely to suffer from which of the following disease?
1070.

Does tracheae occur in humans also ?

Answer» Does tracheae occur in humans also ?
1071.

Match the items listed under column I with those given under column II. Choose the appropriate option from the given choices.Column IColumn IIAResidual Volume (RV)p4000 mL - 4600 mLBInspiratory Reserve Volume (IRV)q1100 mL - 1200 mLCVital Capacity (VC)r1000 mL - 1100 mLDExpiratory Reserves3000 mL - 3500 mLVolume (ERV)EInspiratory Capacityt2500 mL - 3000 mL(IC)

Answer»

Match the items listed under column I with those given under column II. Choose the appropriate option from the given choices.



Column IColumn IIAResidual Volume (RV)p4000 mL - 4600 mLBInspiratory Reserve Volume (IRV)q1100 mL - 1200 mLCVital Capacity (VC)r1000 mL - 1100 mLDExpiratory Reserves3000 mL - 3500 mLVolume (ERV)EInspiratory Capacityt2500 mL - 3000 mL(IC)

1072.

Mark ‘T’if the statement is true and ‘F’ if it is false:(a) Digestionof starch starts in the stomach. (T/F)(b) Thetongue helps in mixing food with saliva. (T/F)(c) Thegall bladder temporarily stores bile. (T/F)(d) The ruminants bring back swallowed grass into their mouth andchew it for some time. (T/F)

Answer»

Mark ‘T’
if the statement is true and ‘F’ if it is false:



(a) Digestion
of starch starts in the stomach. (T/F)


(b) The
tongue helps in mixing food with saliva. (T/F)


(c) The
gall bladder temporarily stores bile. (T/F)



(d) The ruminants bring back swallowed grass into their mouth and
chew it for some time. (T/F)

1073.

A lysosome vesicle of 1 μ m diameter has an internal pH of 5.0. The total number of H^+ ions inside this vesicle would b

Answer» A lysosome vesicle of 1 μ m diameter has an internal pH of 5.0. The total number of H^+ ions inside this vesicle would b
1074.

Which of the following organs does not produce any digestive juice?

Answer»

Which of the following organs does not produce any digestive juice?



1075.

A cactus belongs to the Kingdom plantae because

Answer»

A cactus belongs to the Kingdom plantae because


1076.

Give some characteristics of seeds that are dispersed by air? Give example. [2 MARKS]

Answer» Give some characteristics of seeds that are dispersed by air? Give example. [2 MARKS]
1077.

Observe the figures given as (A) and (B) and answer the following.(a) Which of the figures A or B indicates the process of inhalation and which the process of exhalation?(b) In the figure label the arrows and indicate the direction of(i) movement of air(ii) movement of diaphragm(iii) movement of rib​

Answer» Observe the figures given as (A) and (B) and answer the following.

(a) Which of the figures A or B indicates the process of inhalation and which the process of exhalation?

(b) In the figure label the arrows and indicate the direction of

(i) movement of air

(ii) movement of diaphragm

(iii) movement of rib


1078.

Question 1 (iii)Correct the following statements and rewrite them in your notebook.Roots conduct water to the leaves.

Answer»

Question 1 (iii)



Correct the following statements and rewrite them in your notebook.

Roots conduct water to the leaves.



1079.

The component present in food which is essential for our body is called as __.

Answer»

The component present in food which is essential for our body is called as __.

1080.

Name the cell organelles which can be compared to the following:(a) Transporting channels of the cell (b) Packaging and dispatching unit of the cell (c) Control room of the cell

Answer»

Name the cell organelles which can be compared to the following:



(a) Transporting channels of the cell



(b) Packaging and dispatching unit of the cell



(c) Control room of the cell



1081.

________ is the natural fibre obtained from coconut husk.

Answer»

________ is the natural fibre obtained from coconut husk.



1082.

Find the odd one out.

Answer»

Find the odd one out.


1083.

Draw a well labelled diagram of the respiratory system.

Answer» Draw a well labelled diagram of the respiratory system.
1084.

Root63-5root28+11root7

Answer» Root63-5root28+11root7
1085.

10. mass =0.1 kg calculate impulse at t=2s (a) 0.2 (b) -.0.2 (c) 0.1 (d)-0.4

Answer» 10. mass =0.1 kg calculate impulse at t=2s (a) 0.2 (b) -.0.2 (c) 0.1 (d)-0.4
1086.

Dan lives in the woods where they are a lot of wild animals. During summers, many black bears come right to his house searching for food. This is not seen during the colder months. Explain why.

Answer» Dan lives in the woods where they are a lot of wild animals. During summers, many black bears come right to his house searching for food. This is not seen during the colder months. Explain why.
1087.

The flow of blood in a large artery of an anesthetised dog is diverted through a venturimeter. The widerpart of the meter has a cross-sectional area equal to that of the artery, i.e., 10 mm^2. The narrowerpart has an area 5 mm^2. The pressure drop in theartery is 22 Pa. (Take the density of the blood= 1.06 x 103 kg m^{-3} .The speed of the blood in theartery is(a) 0.12 m s^-(c) 0.24 m s^{-1}(b) 0.62 m s^{-1}(d) 0.42 m s^{-1

Answer» The flow of blood in a large artery of an anesthetised dog is diverted through a venturimeter. The widerpart of the meter has a cross-sectional area equal to that of the artery, i.e., 10 mm^2. The narrowerpart has an area 5 mm^2. The pressure drop in theartery is 22 Pa. (Take the density of the blood= 1.06 x 103 kg m^{-3} .The speed of the blood in theartery is(a) 0.12 m s^-(c) 0.24 m s^{-1}(b) 0.62 m s^{-1}(d) 0.42 m s^{-1
1088.

Match the following. Type of Tooth No. of Teeth / Function 1) Incisors A) 4 / Tearing 2) Canines B) 8 / Grinding 3) Pre-Molars C) 12 / Crushing 4) Molars D) 8 / Cutting

Answer»

Match the following.

Type of Tooth No. of Teeth / Function
1) Incisors A) 4 / Tearing
2) Canines B) 8 / Grinding
3) Pre-Molars C) 12 / Crushing
4) Molars D) 8 / Cutting

1089.

The most ancient group of organisms on the earth is

Answer»

The most ancient group of organisms on the earth is


1090.

Answer the following questions in your own words.a. Write the charateristics of subkingdom Phanerogams.b. Distinguish between monocots and dicots.c. Write a paragraph in your own words about the ornamental plants called ferns.d. Sketch, label and describe the Spirogyra.e. Write the characteristics of the plants belonging to division Bryophyta.

Answer»
Answer the following questions in your own words.




a. Write the charateristics of subkingdom Phanerogams.


b. Distinguish between monocots and dicots.


c. Write a paragraph in your own words about the ornamental plants called ferns.


d. Sketch, label and describe the Spirogyra.



e. Write the characteristics of the plants belonging to division Bryophyta.



1091.

What is the function of the spinal cord?

Answer»

What is the function of the spinal cord?


1092.

The amount of water present in a dry mature seed is around ___ .

Answer»

The amount of water present in a dry mature seed is around ___ .


1093.

Digestive system of ruminants consist of

Answer»

Digestive system of ruminants consist of


1094.

What are the factor which determine climate of a place?

Answer» What are the factor which determine climate of a place?
1095.

What is the function of plastids and vacuoles.

Answer»

What is the function of plastids and vacuoles.



1096.

Swallowed food passes into the stomach through

Answer»

Swallowed food passes into the stomach through


1097.

Which of the following fungi causes severe food poisoning?

Answer»

Which of the following fungi causes severe food poisoning?


1098.

What is resin code? How are resin codes numbered?

Answer»

What is resin code? How are resin codes numbered?



1099.

what is the difference between galenometer and amemeter?

Answer» what is the difference between galenometer and amemeter?
1100.

Choose the correct option for the hybrid variety of bitter gourd developed by Kerala Agricultural University.

Answer»

Choose the correct option for the hybrid variety of bitter gourd developed by Kerala Agricultural University.