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2801.

Definition for fission

Answer» Definition for fission
2802.

Bubonic plague is caused by ___.

Answer»

Bubonic plague is caused by ___.



2803.

Why are antibiotics not effective for viral diseases?

Answer»

Why are antibiotics not effective for viral diseases?


2804.

Question 4 (d)Write a paragraph in your own words on each of the following.(d) Threshing

Answer» Question 4 (d)

Write a paragraph in your own words on each of the following.

(d) Threshing
2805.

How is artificial pollination useful for farmers?

Answer»

How is artificial pollination useful for farmers?

2806.

Stroma in the choloroplast of higher plants contains: Light dependent reaction enzymes Light independent reaction enzymes Ribosomes Chlorophyll

Answer» Stroma in the choloroplast of higher plants contains: Light dependent reaction enzymes Light independent reaction enzymes Ribosomes Chlorophyll
2807.

Can I get an explanation video of hybridization?

Answer»

Can I get an explanation video of hybridization?

2808.

When we enter puberty, we rapidly start to grow tall in a short period which is known as ___.

Answer»

When we enter puberty, we rapidly start to grow tall in a short period which is known as ___.

2809.

Which of the following traces the correct path of sperm inside the female body?

Answer» Which of the following traces the correct path of sperm inside the female body?
2810.

State differences between signs and symptoms.

Answer» State differences between signs and symptoms.
2811.

Which type of pigment rhodophyeae have

Answer» Which type of pigment rhodophyeae have
2812.

Differentiate between hypothyroidism and hyperthyroidism

Answer» Differentiate between hypothyroidism and hyperthyroidism
2813.

A particular cell shows the following components: Cell wall, nucleus, endoplasmic reticulum, vacuole, chloroplast and mitochondria. Identify the cell from the list given below:

Answer»

A particular cell shows the following components: Cell wall, nucleus, endoplasmic reticulum, vacuole, chloroplast and mitochondria. Identify the cell from the list given below:


2814.

Question 7Write 10 lines on the usefulness of microorganisms in our lives.

Answer»

Question 7

Write 10 lines on the usefulness of microorganisms in our lives.



2815.

Which of the following means `Fear of heights'?

Answer»

Which of the following means `Fear of heights'?


2816.

The rapid growth during puberty is due to the ___ secreted by the pituitary.

Answer»

The rapid growth during puberty is due to the ___ secreted by the pituitary.

2817.

The process of drying wheat stalks in the sun and then beating them to separate the grains is called:

Answer» The process of drying wheat stalks in the sun and then beating them to separate the grains is called:
2818.

Chose the odd one.

Answer»

Chose the odd one.



2819.

Name the following parts of the flower from the statements given below-(a) The part which contains pollen grains.(b) The part where the female gamete is formed.(c) The part where pollen grains germinate.(d) The colourful part of the flower which attracts insects.

Answer» Name the following parts of the flower from the statements given below-

(a) The part which contains pollen grains.

(b) The part where the female gamete is formed.

(c) The part where pollen grains germinate.

(d) The colourful part of the flower which attracts insects.
2820.

Identify the correct sequence of agricultural practices carried out by farmers for crop cultivation.

Answer»

Identify the correct sequence of agricultural practices carried out by farmers for crop cultivation.


2821.

Cell is called the basic unit of life. Why?

Answer»

Cell is called the basic unit of life. Why?


2822.

Pick the odd one out Quagga, Nilgiri tahr, Malabar hornbill, Tiger

Answer»

Pick the odd one out

Quagga, Nilgiri tahr, Malabar hornbill, Tiger


2823.

What is hoe?

Answer»

What is hoe?

2824.

Red Data Book, an inventory of endangered plants is published by which of the following organization:

Answer»

Red Data Book, an inventory of endangered plants is published by which of the following organization:


2825.

By inserting a capillary tube upto a depth l in water, the water rises to a height h. If the lower end of the capillary is closed inside water and the capillary is taken out and closed end opened, to what height the water will remain in the tube

Answer»

By inserting a capillary tube upto a depth l in water, the water rises to a height h. If the lower end of the capillary is closed inside water and the capillary is taken out and closed end opened, to what height the water will remain in the tube


2826.

Write in detail about how the plants and animals found in your surroundings prove useful or harmful.

Answer» Write in detail about how the plants and animals found in your surroundings prove useful or harmful.
2827.

can be defined as the place where organisms live.

Answer» can be defined as the place where organisms live.
2828.

The opening and closing of the stomatal pore depends upon(a) Concentration of oxygen in the atmosphere.(b) Temperature of the atmosphere.(c) Presence of water in guard cells.(d) Concentration of CO2 in stomata

Answer» The opening and closing of the stomatal pore depends upon



(a) Concentration of oxygen in the atmosphere.

(b) Temperature of the atmosphere.

(c) Presence of water in guard cells.

(d) Concentration of CO2 in stomata
2829.

All the members of a single species occupying a particular area at a particular time constitute the ___

Answer»

All the members of a single species occupying a particular area at a particular time constitute the ___


2830.

How are war situations and natural calamities affecting the balance of ecosystem?

Answer» How are war situations and natural calamities affecting the balance of ecosystem?
2831.

The e.m.f. of a Daniell cell at 298 K is E1. Zn/SO4(0.01 M) || CuSO4(1.0 M)/Cu When the concentration of ZnSO4 is 1.0 M and that of CuSO4 is 0.01 M, the e.m.f. is changed to E2. What is the relationship betweenE1 and E2 : (1) E1 > E2 (2) E1 < E2 (3) E1 = E2 (4) E2 = 0 E1

Answer» The e.m.f. of a Daniell cell at 298 K is E1. Zn/SO4(0.01 M) || CuSO4(1.0 M)/Cu When the concentration of ZnSO4 is 1.0 M and that of CuSO4 is 0.01 M, the e.m.f. is changed to E2. What is the relationship betweenE1 and E2 : (1) E1 > E2 (2) E1 < E2 (3) E1 = E2 (4) E2 = 0 E1
2832.

Match the following columns and select the correct option: Column - I Column - II(a)Aptenodytes(i)Flying fox(b)Pteropus(ii)Angel fish(c)Pterophyllum(iii)Lamprey(d)Petromyzon(iv)Penguin

Answer»

Match the following columns and select the correct option:

































Column - I Column - II
(a)Aptenodytes(i)Flying fox
(b)Pteropus(ii)Angel fish
(c)Pterophyllum(iii)Lamprey
(d)Petromyzon(iv)Penguin


2833.

Question 21Given below are certain food items required for proper nourishment of adolescents. Name the nutrients present in the food items and write their functions.

Answer» Question 21

Given below are certain food items required for proper nourishment of adolescents. Name the nutrients present in the food items and write their functions.




2834.

Match the following nucleus. Cell wall plastid Vacuole plant cell Nucleolus cytoplasm Chlorophyll eukaryotes. Pseudopodia Nuclear membrane

Answer»

Match the following

nucleus. Cell wall

plastid Vacuole

plant cell Nucleolus

cytoplasm Chlorophyll

eukaryotes. Pseudopodia

Nuclear membrane

2835.

Regarding Assertion and Reason, choose the correct option Assertion[A]: Dolly is a 100% clone of a Finn dorset ewe. Reason[R]: Dolly's nuclear DNA is from a Finn dorset ewe and her mitochondrial DNA is from a Scottish Blackface ewe.

Answer»

Regarding Assertion and Reason, choose the correct option

Assertion[A]: Dolly is a 100% clone of a Finn dorset ewe.

Reason[R]: Dolly's nuclear DNA is from a Finn dorset ewe and her mitochondrial DNA is from a Scottish Blackface ewe.


2836.

Radiation of wavelength 200 nm, propagating in the form of a parallel surface. The intensity of the beam is 5 mW and its cross-sectional area is 1.0 mm2. Find the pressure exerted by radiation on the metallic surface if the radiation is completely reflected.

Answer» Radiation of wavelength 200 nm, propagating in the form of a parallel surface. The intensity of the beam is 5 mW and its cross-sectional area is 1.0 mm2. Find the pressure exerted by radiation on the metallic surface if the radiation is completely reflected.
2837.

The process of fertilisation takes place in the

Answer»

The process of fertilisation takes place in the


2838.

Question 7Paheli dug two pits, A and B in her garden. In pit A, she put a polyhtene bag packed with some agricultural waste. In pit B, she dumped the same kind of waste but without packing it in a polythene bag. She then covered both the pits with soil. What did she observe after a month?(a) Waste in pit A degraded faster than that in pit B.(b) Waste in pit B degraded faster than that in pit A.(c) Waste in both pits degraded almost equally.(d) Waste in both pits did not degrade at all.

Answer» Question 7

Paheli dug two pits, A and B in her garden. In pit A, she put a polyhtene bag packed with some agricultural waste. In pit B, she dumped the same kind of waste but without packing it in a polythene bag. She then covered both the pits with soil. What did she observe after a month?



(a) Waste in pit A degraded faster than that in pit B.

(b) Waste in pit B degraded faster than that in pit A.

(c) Waste in both pits degraded almost equally.

(d) Waste in both pits did not degrade at all.
2839.

What is meant by rearing?

Answer»

What is meant by rearing?



2840.

Why pancreas are called compound gland and what are compound glands?

Answer» Why pancreas are called compound gland and what are compound glands?
2841.

Question 9How are the modes of reproduction different in unicellular and multicellular organisms?

Answer»

Question 9

How are the modes of reproduction different in unicellular and multicellular organisms?



2842.

Which of the following measures are taken for the proper maintenance of a dairy farm?

Answer»

Which of the following measures are taken for the proper maintenance of a dairy farm?


2843.

'कुटज' पाठ के आधार पर सिद्ध कीजिए कि 'दुख और सुख तो मन के विकल्प हैं।'

Answer»
'कुटज' पाठ के आधार पर सिद्ध कीजिए कि 'दुख और सुख तो मन के विकल्प हैं।'
2844.

Discuss various methods for weed control.

Answer»

Discuss various methods for weed control.


2845.

Proteinaceous body surrounded by starch is usually found in which of the following?

Answer»

Proteinaceous body surrounded by starch is usually found in which of the following?


2846.

Why is better agricultural practices and better crop production and management required? [5 MARKS]

Answer» Why is better agricultural practices and better crop production and management required? [5 MARKS]
2847.

How is Phosphorous used in agriculture?

Answer»

How is Phosphorous used in agriculture?

2848.

The National Park which is located in Rajasthan is : (a) Corbett National Park (b) Kanha National Park (c) Satpura National Park (d) Sariska National Park

Answer»

The National Park which is located in Rajasthan is :
(a) Corbett National Park
(b) Kanha National Park
(c) Satpura National Park
(d) Sariska National Park

2849.

What is difference between us ?(a) Plant cell and animal cell.(b) Prokaryotic cell and eukaryotic cell.

Answer» What is difference between us ?

(a) Plant cell and animal cell.

(b) Prokaryotic cell and eukaryotic cell.
2850.

State the difference between eukaryotes and prokaryotes.

Answer» State the difference between eukaryotes and prokaryotes.