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Give any one difference between each of the following :

(a) Protozoa and Metazoa,

(b) Vertebrate and Invertebrate,

(c) Insecta and Archnida,

(d) Flatworm and Roundworm,

Name the bacterium capable of nitrogen fixation which resides in the root nodules of legumes.

Which of the following tissues is/are correctly matched to their function?

Global carbon is fixed in the biosphere through photosynthesis.

(a) Explain any two ways by which carbon is returned to the atmosphere through natural processes.

(b) List any two human activities that have influenced the carbon cycle in nature. [3 marks]

Question 48
The below figure shows the two crop fields [Plots A and B] have been treated by manures and chemical fertilizers respectively, keeping other environmental factors same. Observe the graph and answer the following questions.

(i) Why does plot B show sudden increase and then gradual decrease in yield?
(ii) Why is the highest peak in plot A graph slightly delayed?
(iii) What is the reason for the different pattern of the two graphs?

Where do we find cardiac tissues? What are the functions of cardiac tissues?

The most widely used method of waste disposal is

Why is the small intestine the most important organ of the digestive system ?

Name the most efficient converter of low fibre food stuff into highly nutritious animal protein food.

Mychorrhiza is the symbiosis between ________ .

The simple permanent tissue with thin cell wall is

In resting conditions, tidal volume is

After independence, which of the following activities has immensely contributed to the destruction of forests?

A transgenic mouse that has the one specific desired gene disrupted is called

Development of new individual from female gamete without fertilization is termed as

Name the plastid which gives red colour to tomato and purple colour to plastid

If a cell has a solute concentration of 0.07%, which of the following would be the hypotonic to the cell

1. 0.01% solute

2. 0.1% solute

3.1% solute

4.10% solute

Regarding Assertion [A] and Reason [R]. Choose the correct option.

Assertion [A]: All locomotions are movements but all movements are not locomotion.

Reason [R]: Locomotion is the movement of an individual from one place to another.

Which of the following is second to the right of the one that is seventh from the right end of step IV?

Which of these features makes angiosperms very unique?

Which of the following is not a feature shown by sponges?

Which among the following have the capacity for continuous division?

The mammary glands are modified____.

Which of the following food is a good source of fats?

A student carrying out cell fractionation of plant tissue forgot to label her tubes. The contents of one tube when studied showed organelles bounded by single membrane with acidic internal components. These organelles could be:

The 'repeating unit' of glycogen is

Write true or false. If false change the statement so that it is true.
H-zone of striated muscle fibre represents both thick and thin filaments.

The husk of coconut is a ________ tissue.

Which of the following differences between the prokaryotic and eukaryotic cell isn't correct?

$$\begin{array}{cc}\text{EUKARYOTIC CELLS}& \text{PROKARYOTIC CELLS}\\ \text{Nucleus is present}& \text{Nucleus is absent}\\ \text{Mitochondria is present}& \text{Mitochondria is absent}\\ \text{Present in bacteria and blue algae}& \text{Present in all animals and plants}\\ \text{Centriole is present}& \text{Centriole is not present}\end{array}$$

Tina has got an assignment of categorizing specimens according to their phyla. By mistake one of the groups that she made was mismatched. Find that mismatched group.

What does glucose break down into in the presence and absence of oxygen? [2 MARKS]

The protein present in the stratified epithelium of skin, hairs and nails is____________

A Paramecium reproduces by dividing itself into two daughter cells. This process is called _____.

Unscramble the following and match it with the parts labeled as A, B, C and D.

i. PHAESOGUSO

ii. OMASTCH

iii. ALLSM INTINETES

iv. LARGE INTINETES

Atrio-ventricular septum is made of ___ tisue:

Columnar epithelial cells have ________ located at the base of the cells.

For diffusion or osmosis to take place in root cells, ___ is essential.

Identify the organism in the given figure and name the phylum to which it belongs. Label A to H in the given diagram. [5 MARKS]

Which of the following has a three-chambered heart ?
(a) pigeon
(b) lizard
(c) fish
(d) lion

What is organic farming? [1 MARK]

Which type of tissue is found abudant in animals

What is the energy currency of cell?

Winnowing works on which property?

Ultraviolet radiations from sunlight cause a reaction that produces: