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The normal range of breathing rate per minute in an average adult person at rest is ______ .

What is the term used for side branches arising from axons?

Question 1

Which of the following can be made into crystal?



(a) A bacterium

(b) An amoeba

(c) A virus

(d) A Sperm

In legumes, rhizobium bacteria are found in

Lactic acid produced during anaerobic respiration can be broken down completely when ________ is supplied.

Inhalation is a process of:

Question 65

Match the terms in Column (A) with those in Column (B).



$\begin{array}{cc}Column\left(A\right)& Column\left(B\right)\\ \left(a\right)Trypsin& \left(i\right)Pancreas\\ \left(b\right)Amylase& \left(ii\right)Liver\\ \left(c\right)Bile& \left(iii\right)Gastricglands\\ \left(d\right)Pepsin& \left(iv\right)Saliva\end{array}$

A combination of crops cultivated on the same piece of land simultaneously is known as ____ .

In order to reduce pollution, instead of using plastic bags, we should use bags made up of__.

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Which type of teeth are used when a person is taking a bite of an apple?

Question 37

Fill in the blanks with the terms given in the box below:

$\begin{array}{c}Nucleus,chromosomes,cellwall,cellmembrane,protoplasm,cytoplasm,ribosome,cellorganelles\end{array}$

The outermost layer of plant cells is the ___(a)___ beneath which is the___(b)___ . The term ___(c)___ refers to the jelly-like substance containing all the ___(d)___ . The___(e)___ contains thread-like structures called ___(f)___ .

The animals that have a true vertebral column or a notochord are called ___.

The movement in the figure shown below is called ___ movement

Why is water considered essential for survival of life?

Which of the following factor(s) is/are responsible for the increase in human population?

(i) Advancement in medical science to check the diseases
(ii) Mechanised agriculture for more food production
(iii) Better advancements in road construction
(iv) Industrialisation

Which of the following microbes are used for making alcoholic beverages?

Name two leguminous plants which can fix nitrogen.

What is the tough outer layer of a seed called?

When air is blown from the mouth into a test-tube containing limewater, the limewater turned milky due to the presence of:

The function of ureters in excretory system of humans is

Give a brief description of the process of synthesis of food in green
plants.

Match the columns.



$\begin{array}{cccc}& \text{Column-I}& & \text{Column -II}\\ \text{a}& \text{Glycosuria}& \text{I}& \text{Accumulation of uric acid in joints}\\ \text{b}& \text{Renal calculi}& \text{II}& \text{Inflammation of glomeruli}\\ \text{c.}& \text{Glomerulonephritis}& \text{III}& \text{Mass of crystallised salts within the kidney}\\ \text{d}& \text{Gout}& \text{IV}& \text{Presence of glucose in urine}\\ \text{e}& \text{Proteinuria}& \text{V}& \text{Presence of excess urea in blood}\end{array}$

Name the following:

(a) Controls the function of a cell.

(b) Selectively allows things to get in and out of the cell.

(c) Transfer characters from parents to their children.

Name the respiratory organs of (i) fish (ii) dog.

Which bone/bones does not belong to the axial skeleton?

_____ can impair breathing and send the body into shock.

Choose the correct option by identifying the cells above and their function.

Which of the following method is not used for diagnosis of allergy?

Choose the option that correctly sorts the statements given below into two categories: Breathing and respiration.

1. Physical Process

2. Chemical Process

3. Happens with the help of Lungs

4. Happens in cells

5. Exchange of gases is to and from the atmosphere

6. Break down of glucose

Match the following columns and select the correct option:

Why do we require oxygen?

Question 3

How is oxygen and carbon dioxide transported in human beings?

Give reasons.

(a) We boil milk from time to time.

(b) We should include fibrous substances in our diet.