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3751.

Biodiversity hot spots are:

Answer»

Biodiversity hot spots are:


3752.

The symptom of goiter is ________.

Answer»

The symptom of goiter is ________.


3753.

Why do plant cells not have lysosomes?

Answer»

Why do plant cells not have lysosomes?

3754.

Which of the following is not a primary sexual characteristic in females ? (a) fallopian tubes (b) ovaries (c) seminal vesicles (d) vagina

Answer»

Which of the following is not a primary sexual characteristic in females ?

(a) fallopian tubes (b) ovaries (c) seminal vesicles (d) vagina

3755.

The cell organelle in animals which contains its own DNA, other than the nucleus is __

Answer»

The cell organelle in animals which contains its own DNA, other than the nucleus is __

3756.

Give some examples of protozoan disease

Answer»

Give some examples of protozoan disease

3757.

What are the usefulness of microbes in industries

Answer»

What are the usefulness of microbes in industries

3758.

Calcitonin is one of the hormones secreted by the ___ gland.

Answer»

Calcitonin is one of the hormones secreted by the ___ gland.


3759.

Which is the living substance of the cell ?

Answer»

Which is the living substance of the cell ?

3760.

Louis Pasteur developed vaccine against which of the following diseases?

Answer»

Louis Pasteur developed vaccine against which of the following diseases?


3761.

The cell in a living organism is the basic structural unit . Give reasons.

Answer»

The cell in a living organism is the basic structural unit . Give reasons.

3762.

A female has swelling in her neck and she has protruded eye balls. She is suffering from

Answer»

A female has swelling in her neck and she has protruded eye balls. She is suffering from


3763.

Which hormone regulates the secretion of adrenal gland

Answer»

Which hormone regulates the secretion of adrenal gland


3764.

Which is the smallest cell?

Answer»

Which is the smallest cell?


3765.

Define manure. What are the advantages of manure ?

Answer»

Define manure. What are the advantages of manure ?

3766.

Which of the following is a mis-matched pair ? (a) adrenaline : pituitary gland (b) estrogen : ovary (c) pancreas : insulin (d) testosterone : testis

Answer»

Which of the following is a mis-matched pair ?

(a) adrenaline : pituitary gland (b) estrogen : ovary

(c) pancreas : insulin (d) testosterone : testis

3767.

Who discovered ‘vaccine’ for the first time?

Answer»

Who discovered ‘vaccine’ for the first time?


3768.

Name the following branches of biology (a) Application of biological processes in technologies. (b) Science of growing fruits and vegetables. (c) Study of prehistoric forms of life. (d) Study of causes of immunity (resistance to or defence against diseases). (e) Study of fishes.

Answer»

Name the following branches of biology
(a) Application of biological processes in technologies.
(b) Science of growing fruits and vegetables.
(c) Study of prehistoric forms of life.
(d) Study of causes of immunity (resistance to or defence against diseases).
(e) Study of fishes.

3769.

Which of the following techniques describes capture fishing?

Answer»

Which of the following techniques describes capture fishing?


3770.

In pisciculture, goldfish and guppy are reared for

Answer»

In pisciculture, goldfish and guppy are reared for


3771.

Find the correct match of the columns. Element supplied by fertilizer Example of fertilizers. (i) Nitrogen (a) Super phosphate (ii) Phosphorus (b) Potash (iii) Potassium (c) Urea

Answer»

Find the correct match of the columns.

Element supplied by fertilizer Example of fertilizers.

(i) Nitrogen (a) Super phosphate
(ii) Phosphorus (b) Potash
(iii) Potassium (c) Urea


3772.

Name the friendly microbes?

Answer» Name the friendly microbes?
3773.

Identify the uncountable noun in the sentence. The women husked wheat during the day and cooked for their families at night.

Answer»

Identify the uncountable noun in the sentence.

The women husked wheat during the day and cooked for their families at night.


3774.

An association between two individuals or populations where both benefit and neither can survive without the other is:

Answer»

An association between two individuals or populations where both benefit and neither can survive without the other is:


3775.

Give a short account of biofertilizers.

Answer»

Give a short account of biofertilizers.

3776.

___ is always added to pickles to preserve it for a long time.

Answer» ___ is always added to pickles to preserve it for a long time.
3777.

The mode of nutrition found in the plant Indian Pipe.

Answer»

The mode of nutrition found in the plant Indian Pipe.

3778.

The yellowish fluid secreted by the mother during her initial days of lactation is called: [1] Oxytocin Colostrum Serum Plasma

Answer»

The yellowish fluid secreted by the mother during her initial days of lactation is called: [1]

  1. Oxytocin
  2. Colostrum
  3. Serum
  4. Plasma
3779.

Choose the option that best describes the direction of flow of water in the plants.

Answer»

Choose the option that best describes the direction of flow of water in the plants.


3780.

What are transposones? What is physarum? Can you explain more about slime moulds?

Answer» What are transposones? What is physarum? Can you explain more about slime moulds?
3781.

In __ (broadcasting/seed drilling) method, an iron drill is used to sow the seeds.

Answer» In __ (broadcasting/seed drilling) method, an iron drill is used to sow the seeds.
3782.

Which of the following nutrients is needed for protecting our body against diseases?

Answer»

Which of the following nutrients is needed for protecting our body against diseases?


3783.

Fiction of cell wall

Answer»

Fiction of cell wall

3784.

Is brain an effective organ? If false give reason.

Answer» Is brain an effective organ? If false give reason.
3785.

(a) What is meant by fermentation ? Name the scientist who discoverd fermetation. (b) Which micro-organisms help in cleaning the environment ?

Answer»

(a) What is meant by fermentation ? Name the scientist who discoverd fermetation.

(b) Which micro-organisms help in cleaning the environment ?

3786.

The production of fish on a large scale by farming fish culture in fish nurseries is called

Answer»

The production of fish on a large scale by farming fish culture in fish nurseries is called


3787.

Which of the following statement(s) is/are NOT true for the taxonomic rank of the species?

Answer»

Which of the following statement(s) is/are NOT true for the taxonomic rank of the species?


3788.

Reproduction is essential for living organisms in order to : (a) keep the individual organism alive (b) fulfil their energy requirements (c) maintain growth (d) continue the species for ever

Answer»

Reproduction is essential for living organisms in order to :

(a) keep the individual organism alive

(b) fulfil their energy requirements

(c) maintain growth

(d) continue the species for ever

3789.

What is the advantage of using green manures like legumes and clover?

Answer»

What is the advantage of using green manures like legumes and clover?


3790.

The production of seedless varieties of fruits such as grapes, pomegranate, etc. is due to the phenomenon of ___.

Answer» The production of seedless varieties of fruits such as grapes, pomegranate, etc. is due to the phenomenon of ___.
3791.

Organisms come together to form which upper level of organisation?

Answer»

Organisms come together to form which upper level of organisation?


3792.

Name two food items which are prevented by sun drying methods in our home?

Answer» Name two food items which are prevented by sun drying methods in our home?
3793.

___ are pores in the leaf that allow gas exchange in the plant.

Answer»

___ are pores in the leaf that allow gas exchange in the plant.

3794.

Budding is usually seen in

Answer»

Budding is usually seen in


3795.

how we get vitamin d from sunlight?

Answer» how we get vitamin d from sunlight?
3796.

What type of reproduction takes place in hens and butterflies

Answer»

What type of reproduction takes place in hens and butterflies

3797.

After harvesting, ___ is to be done to get the grains of wheat.

Answer» After harvesting, ___ is to be done to get the grains of wheat.
3798.

Hens and frogs both are viviparous but they show different types of fertilisation. Why? Explain giving suitable reason

Answer» Hens and frogs both are viviparous but they show different types of fertilisation. Why? Explain giving suitable reason
3799.

The life span of RBCs is

Answer»

The life span of RBCs is


3800.

Male and female cockroach differ due to the presence or absence of

Answer»

Male and female cockroach differ due to the presence or absence of