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1501.

Which among the following species is/are endemic to India? (1) Gharial(2) Konkanpinda (3) Spiny-tailed lizard (4) Lion-tailed macaque Code:

Answer»

Which among the following species is/are endemic to India?

(1) Gharial(2) Konkanpinda

(3) Spiny-tailed lizard (4) Lion-tailed macaque

Code:


1502.

An infectious disease is one that is ___________.

Answer»

An infectious disease is one that is ___________.


1503.

Answer the following questions. (a) Besides using plants for food, in which other ways do we make use of plants? (b) Write the three stages of the tilling of land in the proper order. (c) What are the advantages of the pre-sowing tilling activities? (d) What are the activities at the post-sowing stage of tilling? (e) Explain the difference between ‘thinning the crop’ and ‘weeding’. (f) Explain the difference between preventive and curative spraying of chemicals. (g) What is the method used for sowing each of the following crops: wheat, rice, sugarcane, pumpkin, jowar, cotton. (h) How many methods are there of sowing seeds?

Answer»

Answer the following questions.



(a) Besides using plants for food, in which other ways do we make use of plants?



(b) Write the three stages of the tilling of land in the proper order.



(c) What are the advantages of the pre-sowing tilling activities?



(d) What are the activities at the post-sowing stage of tilling?



(e) Explain the difference between ‘thinning the crop’ and ‘weeding’.



(f) Explain the difference between preventive and curative spraying of chemicals.



(g) What is the method used for sowing each of the following crops:



wheat, rice, sugarcane, pumpkin, jowar, cotton.



(h) How many methods are there of sowing seeds?



1504.

If you are given samples of Loamy Soil, Sandy soil, Silt and humus, state how would you differentiate between them. [5 MARKS]

Answer» If you are given samples of Loamy Soil, Sandy soil, Silt and humus, state how would you differentiate between them. [5 MARKS]
1505.

Do virus have DNA or RNA?

Answer»

Do virus have DNA or RNA?

1506.

Name the two types of substances which are added to the fields by the farmers to maintain the fertility of soil.

Answer»

Name the two types of substances which are added to the fields by the farmers to maintain the fertility of soil.

1507.

Can TCT reduce bone calcium level?

Answer» Can TCT reduce bone calcium level?
1508.

Can the knowledge about toxicity of micronutrients be of some importance to a farmer? a gardener? or even for you in your kitchen-garden?

Answer» Can the knowledge about toxicity of micronutrients be of some importance to a farmer? a gardener? or even for you in your kitchen-garden?
1509.

Which of the following are information carriers in the body?

Answer»

Which of the following are information carriers in the body?


1510.

Why is transpiration important in plants?

Answer»

Why is transpiration important in plants?


1511.

What are plant sieve tube cells ??

Answer» What are plant sieve tube cells ??
1512.

Define A) equivalent concept B) titration C) gravitimetrical analysis D) Plasma E) formality F) Bose einstien condenstate

Answer» Define A) equivalent concept B) titration C) gravitimetrical analysis D) Plasma E) formality F) Bose einstien condenstate
1513.

48.What is the product of oxidation of pentan-3-one (it have 2 alpha methyl group) using Selenium dioxide?

Answer» 48.What is the product of oxidation of pentan-3-one (it have 2 alpha methyl group) using Selenium dioxide?
1514.

Which one of the following is not a bio-fertiliser?

Answer»

Which one of the following is not a bio-fertiliser?


1515.

How are the seeds dispersed in calotropis?

Answer» How are the seeds dispersed in calotropis?
1516.

Choose the wrong option:

Answer»

Choose the wrong option:


1517.

If decomposers are removed what will happen to the ecosystem?

Answer»

If decomposers are removed what will happen to the ecosystem?


1518.

The non-cellular, non-living component of blood is called___

Answer»

The non-cellular, non-living component of blood is called___

1519.

What is the difference between the formation of coal and petroleum?

Answer» What is the difference between the formation of coal and petroleum?
1520.

List the various troubles encountered by someone with Asperger syndrome.

Answer» List the various troubles encountered by someone with Asperger syndrome.
1521.

The change in voice of boys during puberty is due to enlargement of:

Answer»

The change in voice of boys during puberty is due to enlargement of:



1522.

__ emission is mainly responsible for global warming.

Answer»

__ emission is mainly responsible for global warming.

1523.

A: detritus food chain begins with detritus. R: Detrivores like fungi and bacteria and major decomposers in such food chains.

Answer» A: detritus food chain begins with detritus. R: Detrivores like fungi and bacteria and major decomposers in such food chains.
1524.

Due to overuse of chemical fertilizers, the soil in a farm has become acidic and crop yields have dropped. What remedial action will you recommend to the farmer?

Answer» Due to overuse of chemical fertilizers, the soil in a farm has become acidic and crop yields have dropped. What remedial action will you recommend to the farmer?
1525.

Question 26The correct sequence of organs in the male reproductive system for transport of sperms is(a) Testis → Vas deferens → Urethra(b) Testis → Ureter → Urethra(c) Testis → Urethra → Ureter(d) Testis → Vas deferens → Ureter

Answer»

Question 26

The correct sequence of organs in the male reproductive system for transport of sperms is



(a) Testis → Vas deferens → Urethra

(b) Testis → Ureter → Urethra

(c) Testis → Urethra → Ureter

(d) Testis → Vas deferens → Ureter



1526.

Water lettuce is a

Answer»

Water lettuce is a


1527.

The substances that are used to build immunity against certain diseases are called _________.

Answer»

The substances that are used to build immunity against certain diseases are called _________.



1528.

Which is the first step in the cultivation of a crop ?

Answer»

Which is the first step in the cultivation of a crop ?

1529.

Identify the organelle and list down its functions.

Answer» Identify the organelle and list down its functions.




1530.

(a) Around which age menarche occurs in girls? (b) Around which age menopause occurs in women?

Answer»

(a) Around which age menarche occurs in girls?

(b) Around which age menopause occurs in women?

1531.

Identify a,b & c in the given figure

Answer»

Identify a,b & c in the given figure


1532.

What is the importance of Mons pubis In female external genitalia

Answer» What is the importance of Mons pubis
In female external genitalia
1533.

Of all the passive processes, the only one that does not require a concentration gradient is

Answer»

Of all the passive processes, the only one that does not require a concentration gradient is


1534.

Question 24How can we say that fish exhibits external fertilization?

Answer» Question 24

How can we say that fish exhibits external fertilization?

1535.

Why there is no proper medicine to cure any viral attacks ?

Answer» Why there is no proper medicine to cure any viral attacks ?
1536.

A system of classification based on all important characters, morphological and otherwise, is termed _____.

Answer»

A system of classification based on all important characters, morphological and otherwise, is termed _____.

1537.

What is a complete flower?

Answer» What is a complete flower?
1538.

Question 16During respiration exchange of gases take place in(a) trachea and larynx(b) alveoli of lungs(c) alveoli and throat(d) throat and larynx

Answer»

Question 16

During respiration exchange of gases take place in



(a) trachea and larynx

(b) alveoli of lungs

(c) alveoli and throat

(d) throat and larynx



1539.

(a)Define the following terms- ​(i) mineral.(b)Define the following terms- ​(ii) ore.(c)Define the following terms- ​(iii) gangue.

Answer» (a)

Define the following terms- ​

(i) mineral.


(b)

Define the following terms- ​

(ii) ore.



(c)

Define the following terms- ​

(iii) gangue.






1540.

Who proposed the three kingdom classification system?

Answer»

Who proposed the three kingdom classification system?



1541.

Bella recently visited a National Park. Which of the following cannot be her observation?

Answer»

Bella recently visited a National Park. Which of the following cannot be her observation?


1542.

Botanical name if water hyacinth is

Answer»

Botanical name if water hyacinth is


1543.

The correct sequence of anaerobic reactions in yeast is(a) Glucosecytoplasm−−−−−−→Pyruvatemitochondria−−−−−−−−→Ethanol+Carbon dioxide(b) Glucosecytoplasm−−−−−−→Pyruvatecytoplasm−−−−−−→Lactic acid(c) Glucosecytoplasm−−−−−−→Pyruvatemitochondria−−−−−−−−→Lactic acid(d) Glucosecytoplasm−−−−−−→Pyruvatecytoplasm−−−−−−→Ethanol+Carbon dioxide

Answer» The correct sequence of anaerobic reactions in yeast is



(a) Glucosecytoplasm−−−−−Pyruvatemitochondria−−−−−−−Ethanol+Carbon dioxide

(b) Glucosecytoplasm−−−−−Pyruvatecytoplasm−−−−−Lactic acid

(c) Glucosecytoplasm−−−−−Pyruvatemitochondria−−−−−−−Lactic acid

(d) Glucosecytoplasm−−−−−Pyruvatecytoplasm−−−−−Ethanol+Carbon dioxide
1544.

The carrier of malaria-causing protozoan is : (a) female Anopheles mosquito (b) cockroach (c) housefly (d) female Aedes mosquito

Answer»

The carrier of malaria-causing protozoan is :

(a) female Anopheles mosquito (b) cockroach (c) housefly (d) female Aedes mosquito

1545.

Identify the correct sequence of the process of formation of Fossil fuels.i. Formation of pete - a spongy materialii. Sinking to the bottom of the swampsiii. Death of huge ferns and leaves covering the swampsiv.High pressure turning pete to fossil fuelsv. Formation of sedimentary rock

Answer» Identify the correct sequence of the process of formation of Fossil fuels.

i. Formation of pete - a spongy material

ii. Sinking to the bottom of the swamps

iii. Death of huge ferns and leaves covering the swamps

iv.High pressure turning pete to fossil fuels

v.
Formation of sedimentary rock
1546.

Our immune system is most likely to fail in case of:

Answer»

Our immune system is most likely to fail in case of:



1547.

what is the fate of RBCs

Answer» what is the fate of RBCs
1548.

Shreya is fond of shopping and has many polythene bags at her house,later she dumped those polythene bags in the soil and her friend Swetha is very fond of potato chips and in her fondness towards chips she also disposes the plastic packets of chips in the soil. What negative consequences can you enlist from this activity of both the friends towards the life of soil? [3 MARKS]

Answer»

Shreya is fond of shopping and has many polythene bags at her house,later she dumped those polythene bags in the soil and her friend Swetha is very fond of potato chips and in her fondness towards chips she also disposes the plastic packets of chips in the soil. What negative consequences can you enlist from this activity of both the friends towards the life of soil? [3 MARKS]

1549.

Pigment-containing membranous extensions in some cyanobacteria are:

Answer»

Pigment-containing membranous extensions in some cyanobacteria are:


1550.

38.Explanation of cyclic n non cyclic phosphorylation ?

Answer» 38.Explanation of cyclic n non cyclic phosphorylation ?