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8951.

Consider a plant growing in soil that is rich in Magnesium. By what process will Magnesium enter a plant, in whose root hair there is a relatively lower concentration of the magnesium?

Answer»

Consider a plant growing in soil that is rich in Magnesium. By what process will Magnesium enter a plant, in whose root hair there is a relatively lower concentration of the magnesium?


8952.

Structure joining the two cerebral hemispheres.

Answer»

Structure joining the two cerebral hemispheres.


8953.

What is common between chloroplasts, chromoplasts and leucoplasts?

Answer»

What is common between chloroplasts, chromoplasts and leucoplasts?


8954.

The three cultural revolutions which favoured a steep rise in the human population are : (i) Agricultural Revolution (ii) Tool-making Revolution (iii) Scientific Industrial Revolution Arrange them in the order of occurrence.

Answer»

The three cultural revolutions which favoured a steep rise in the human population are :

(i) Agricultural Revolution

(ii) Tool-making Revolution

(iii) Scientific Industrial Revolution

Arrange them in the order of occurrence.


8955.

Cytological evidence to Mendel’s law of segregation can be observed in

Answer»

Cytological evidence to Mendel’s law of segregation can be observed in


8956.

Which one of the following is the unit of the nervous system?

Answer»

Which one of the following is the unit of the nervous system?


8957.

Floods are caused by ___

Answer» Floods are caused by ___
8958.

Which one of the following is the major cation present in the plasma of blood?

Answer»

Which one of the following is the major cation present in the plasma of blood?


8959.

What factors could lead to the rise of new species? [3 MARKS]

Answer»

What factors could lead to the rise of new species? [3 MARKS]

8960.

What would happen if human blood becomes acidic (pH lowers)?

Answer»

What would happen if human blood becomes acidic (pH lowers)?


8961.

Vocal cords occur in_____

Answer»

Vocal cords occur in_____


8962.

I have doubt on this question at last it gives the answer as -8x

Answer» I have doubt on this question at last it gives the answer as -8x
8963.

Which one of the following is the correct sequence to prepare a stained temporary mount of an onion peel?

Answer»

Which one of the following is the correct sequence to prepare a stained temporary mount of an onion peel?


8964.

What are the basic events of reproduction ? DNA copies generated during reproduction will be similar but may not be identical. Justify the statement

Answer» What are the basic events of reproduction ?
DNA copies generated during reproduction will be similar but may not be identical. Justify the statement
8965.

Question 4 (a) What will happen if: We go on cutting trees.

Answer» Question 4 (a)
What will happen if:

We go on cutting trees.
8966.

what are outside raw materials used for by an organism?

Answer»

what are outside raw materials used for by an organism?

8967.

The term antibiotics was coined by__.

Answer»

The term antibiotics was coined by__.

8968.

What is the major diffence between - hard water , heavy water ,soft water ?

Answer»

What is the major diffence between - hard water , heavy water ,soft water ?

8969.

Due to ______ pressure, the seed coat ruptures in case of germinating seeds.

Answer»

Due to ______ pressure, the seed coat ruptures in case of germinating seeds.


8970.

Differentiate between aerobic and anaerobic respiration.

Answer» Differentiate between aerobic and anaerobic respiration.
8971.

Why is lymph called parallel defence?(2 marks)

Answer»

Why is lymph called parallel defence?(2 marks)

8972.

Why is molecular movements necessary for life

Answer»

Why is molecular movements necessary for life

8973.

Variation is beneficial to the species but not necessary for the individual. Justify the statement

Answer»

Variation is beneficial to the species but not necessary for the individual. Justify the statement

8974.

Which of the following are the functions of stomata?

Answer»

Which of the following are the functions of stomata?


8975.

Phytohormones are defined as:

Answer»

Phytohormones are defined as:


8976.

In mammals, ____ contain the respiratory pigment called haemoglobin.

Answer»

In mammals, ____ contain the respiratory pigment called haemoglobin.


8977.

where do plants get each of teh raw materials required for photosynthesis

Answer»

where do plants get each of teh raw materials required for photosynthesis

8978.

Which one of the following concerns photophosphorylation?

Answer»

Which one of the following concerns photophosphorylation?


8979.

To determine the percentage of water absorbed by raisins, raisins are soaked in water for:

Answer»

To determine the percentage of water absorbed by raisins, raisins are soaked in water for:


8980.

Oxygenated blood goes out of the heart from ___

Answer»

Oxygenated blood goes out of the heart from ___


8981.

The plant part which exhibits negative geotropism is: (a) root (b) stem (c) branch (d) leaves

Answer»

The plant part which exhibits negative geotropism is:

(a) root

(b) stem

(c) branch

(d) leaves

8982.

The permeability of which of the following ions increase causes depolarization?

Answer»

The permeability of which of the following ions increase causes depolarization?


8983.

Define asexual reproduction.

Answer»

Define asexual reproduction.

8984.

Question 119 Rain forests are home to 90000 of the 250000 identified plant species in the world. What per cent of the world's identified plant species are found in rain forests?

Answer»

Question 119

Rain forests are home to 90000 of the 250000 identified plant species in the world. What per cent of the world's identified plant species are found in rain forests?

8985.

Which of the following sequences is the correct systemic circulation pathway?

Answer»

Which of the following sequences is the correct systemic circulation pathway?


8986.

Which among them is a pistil of a flower?

Answer»

Which among them is a pistil of a flower?


8987.

Apart from carbon dioxide and water, name four other raw materials which are needed by the plants.

Answer»

Apart from carbon dioxide and water, name four other raw materials which are needed by the plants.

8988.

Which of the following is the phenotypic monohybrid ratio in F2 generation?

Answer»

Which of the following is the phenotypic monohybrid ratio in F2 generation?


8989.

Write three advantages of vegetative propagation? [3 MARKS]

Answer»

Write three advantages of vegetative propagation? [3 MARKS]

8990.

When Raju looked at a cell using an electron microscope, he found a structure which looked like beads on a string inside the nucleus. It could likely have been ___.

Answer»

When Raju looked at a cell using an electron microscope, he found a structure which looked like beads on a string inside the nucleus. It could likely have been ___.


8991.

Mendel’s hybridization strategy was using two plants_________

Answer»

Mendel’s hybridization strategy was using two plants_________


8992.

List any three features of garden pea with their dominant and recessive traits.

Answer»

List any three features of garden pea with their dominant and recessive traits.

8993.

Which of the following statements is/are not true about endoplasmic reticulum?

Answer»

Which of the following statements is/are not true about endoplasmic reticulum?


8994.

Distance between two linked genes is measured in map units that depict:

Answer»

Distance between two linked genes is measured in map units that depict:


8995.

Nobel prize was awarded to Paul Muller on the discovery of which of the following pesticides?

Answer»

Nobel prize was awarded to Paul Muller on the discovery of which of the following pesticides?


8996.

Why do plant cells need cell walls? What is it made up of? [2 MARKS]

Answer»

Why do plant cells need cell walls? What is it made up of? [2 MARKS]

8997.

Reproduction is one of the most important characteristics of living beings. Give three reasons in support of the statement.

Answer» Reproduction is one of the most important characteristics of living beings. Give three reasons in support of the statement.
8998.

(i) Name two waste products which are stored in old xylem in plants. (ii) Name the process by which plants get rid of excess water. Name the pores through which this process takes place.

Answer» (i) Name two waste products which are stored in old xylem in plants.

(ii) Name the process by which plants get rid of excess water. Name the pores through which this process takes place.
8999.

what is meant by anabolic reaction

Answer» what is meant by anabolic reaction
9000.

When a plant is girdled (ringed)

Answer»

When a plant is girdled (ringed)