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1.

Which of the following is the main function of the hypophyseal portal system?

Answer»

Which of the following is the main function of the hypophyseal portal system?



2.

A place where hives of honey bees are reared for honey ___

Answer» A place where hives of honey bees are reared for honey ___
3.

Molecules cannot penetrate or spread through cracks in between cells. This is due the presence of

Answer»

Molecules cannot penetrate or spread through cracks in between cells. This is due the presence of



4.

The nervous system which is entirely motor and operates without conscious control is

Answer»

The nervous system which is entirely motor and operates without conscious control is



5.

A group of collaborating photosynthetic pigment molecules is called

Answer» A group of collaborating photosynthetic pigment molecules is called
6.

Dinosaurs became extinct by the end of

Answer» Dinosaurs became extinct by the end of
7.

In nitrogen fixation, nitrogen is converted into

Answer»

In nitrogen fixation, nitrogen is converted into

8.

The middle layer of uterus is thick, muscular and it helps in

Answer» The middle layer of uterus is thick, muscular and it helps in
9.

The bacterium Chlamydia trachomatis causes ___.

Answer»

The bacterium Chlamydia trachomatis causes ___.



10.

In their experiment, Meselson and Stahl cultured E.coli in a medium containing

Answer»

In their experiment, Meselson and Stahl cultured E.coli in a medium containing



11.

Regarding assertion and reason, choose the correct optionAssertion [A]: All life on earth derives energy from plantsReason [R]: Plants are the primary producers being able to produce their own food. All living organisms are directly or indirectly dependant on plants for food

Answer»

Regarding assertion and reason, choose the correct option

Assertion [A]: All life on earth derives energy from plants

Reason [R]: Plants are the primary producers being able to produce their own food. All living organisms are directly or indirectly dependant on plants for food


12.

Which one of the following is a gaseous plant hormone?

Answer»

Which one of the following is a gaseous plant hormone?



13.

What is the cell:nuclei ratio in the given image of a germinating pollen?

Answer»

What is the cell:nuclei ratio in the given image of a germinating pollen?




14.

Net primary productivity is the gross primary productivity minus energy

Answer»

Net primary productivity is the gross primary productivity minus energy



15.

In which type of parthenogenesis do males develop from unfertilised eggs and females from fertilised eggs?

Answer»

In which type of parthenogenesis do males develop from unfertilised eggs and females from fertilised eggs?



16.

Which of the following statements defines the density of population?

Answer»

Which of the following statements defines the density of population?



17.

What is the reason for Bangalore turning into a garbage city?

Answer» What is the reason for Bangalore turning into a garbage city?
18.

What causes the formation of rings in dicots?

Answer»

What causes the formation of rings in dicots?



19.

Which of the following represents the countercurrent mechanism in fish?

Answer»

Which of the following represents the countercurrent mechanism in fish?




20.

When storage roots occur in clusters from the base of the stem they are called

Answer» When storage roots occur in clusters from the base of the stem they are called
21.

Continuous secretion of milk is maintained by

Answer»

Continuous secretion of milk is maintained by



22.

Epidermal tissue system does not include _______

Answer»

Epidermal tissue system does not include _______



23.

Salt concentration (Salinity) of the sea measured in parts per thousand is:

Answer»

Salt concentration (Salinity) of the sea measured in parts per thousand is:



24.

Which one of the following is not a flower?

Answer»

Which one of the following is not a flower?



25.

Regarding the assertion and reason; choose the correct option.Assertion [A]: Cyclin and CDK complex constitute various checkpoints to ensure correct sequence and product in each phase of cell division .Reason [R]: The Cyclin and CDK complex acts as molecular regulators or switches.

Answer»

Regarding the assertion and reason; choose the correct option.


Assertion [A]: Cyclin and CDK complex constitute various checkpoints to ensure correct sequence and product in each phase of cell division .


Reason [R]: The Cyclin and CDK complex acts as molecular regulators or switches.



26.

Which of the following is not correctly matched?Ameboid Movement - LeucocytesCiliary Movement - MacrophagesFlagellar movement - SpermMuscular Movement - Jaws

Answer»

Which of the following is not correctly matched?



Ameboid Movement - Leucocytes

Ciliary Movement - Macrophages

Flagellar movement - Sperm

Muscular Movement - Jaws



27.

The plant life cycle alternates between a sporophyte and a gametophyte. Usually, in the sporophyte stage

Answer»

The plant life cycle alternates between a sporophyte and a gametophyte. Usually, in the sporophyte stage



28.

The name of Norman Borlaug is associated with

Answer» The name of Norman Borlaug is associated with
29.

Brown colour of phaeophyceae is due to the high concentration of a pigment called -

Answer»

Brown colour of phaeophyceae is due to the high concentration of a pigment called -



30.

Identify the incorrect statement about lichens____.

Answer»

Identify the incorrect statement about lichens____.



31.

The correct sequence of food chain is

Answer»

The correct sequence of food chain is

32.

Rhizome, which grows vertically is also called a

Answer»

Rhizome, which grows vertically is also called a



33.

Which of these stem modifications are seen in aquatic plants?

Answer»

Which of these stem modifications are seen in aquatic plants?



34.

Plants whose requirements for respiration are similar to animals are

Answer»

Plants whose requirements for respiration are similar to animals are



35.

If 5 molecules of glucose respired aerobically and another 5 molecules anaerobically, what is the total number of ATP and CO2 molecules expected form these reactions?

Answer»

If 5 molecules of glucose respired aerobically and another 5 molecules anaerobically, what is the total number of ATP and CO2 molecules expected form these reactions?



36.

A bacteria that is helpful in creating transgenic plants is

Answer» A bacteria that is helpful in creating transgenic plants is
37.

The fleshy receptacle of syconus of fig encloses a number of

Answer»

The fleshy receptacle of syconus of fig encloses a number of



38.

Law of independent assortment is ___.

Answer»

Law of independent assortment is ___.



39.

Auxanometer is used to detect

Answer» Auxanometer is used to detect
40.

Ribs are elevated when muscles between ribs are________

Answer»

Ribs are elevated when muscles between ribs are________



41.

Based on the image choose the correct option.

Answer» Based on the image choose the correct option.


42.

The tube that is used for bacterial conjugation is known as

Answer»

The tube that is used for bacterial conjugation is known as



43.

Climax community is in a state of:

Answer»

Climax community is in a state of:



44.

The following structures are analogous to the kidney in other organisms. Which of them is mismatched?

Answer»

The following structures are analogous to the kidney in other organisms. Which of them is mismatched?


45.

Which processes of Krebs cycle are associated with both decarboxylation and dehydrogenation?

Answer»

Which processes of Krebs cycle are associated with both decarboxylation and dehydrogenation?



46.

Which of the following protects humans from the harmful effects of UV radiations?

Answer»

Which of the following protects humans from the harmful effects of UV radiations?



47.

Mendel used true breeding pea lines for his experiments because -

Answer»

Mendel used true breeding pea lines for his experiments because -



48.

In logistic growth the point at which the population size stabilizes and growth stops is:

Answer»

In logistic growth the point at which the population size stabilizes and growth stops is:



49.

Emergency contraceptives are effective if used within________

Answer»

Emergency contraceptives are effective if used within________



50.

Which of the following is not a structural aspect of an ecosystem?

Answer» Which of the following is not a structural aspect of an ecosystem?