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5 patients have arrived at hospital . Which organ system isn't working properly in each patient?
Karis:-very pale ,hardly breathing
Amarjit:-pale , no pulse
nadeen :-back pain , cant move
simon :- leg bone sticking out

What does an intracellular fluid means?

Which one of the following diseases is caused by bacteria?

Which of these animals are commonly found in tropical rainforests?

A healthy diet is one that:

Fill in the blanks.

(a) ………… is produced under the skin in early morning sunlight.

(b) Deficiency of vitamin C causes a disease called ………… .

(c) The substance ………… in tobacco is harmful for both the heart and the brain.

(d) Taking intoxicating substances has adverse effects on the ………… .

Match the following.

The following image represents a type of asexual reproduction in a particular organism. Can you identify the mode of reproduction?

What is the function of ribs in respiration? [3 MARKS]

We should eat a balanced diet because it contains all the components of food in the right proportions.

Different kinds of tissues organise to form an _______.

The correct set of the match about LH and FSH from the following table is ___. (enter one of A, B, C or D)

$$\begin{array}{ccc}\text{Target organ}& \text{Secretion}& \text{Characters developed}\\ \text{A - Testes}& \text{Testosterone}& \text{Development of breasts}\\ \text{B - Testes}& \text{Oestrogen}& \text{Development of acne}\\ \text{C - Ovaries}& \text{Oestrogen}& \text{Development of breasts}\\ \text{D - Ovaries}& \text{Testosterone}& \text{Development of acne}\end{array}$$

What does this sign on the packets of food substances indicate?​

​​​​​​

Identify the festival shown here.

Which of the following are parts involved in the sexual reproduction in plants?
(i) Flower
(ii) Seed
(iii) Fruit
(iv) Branch
Choose the correct answer from below
a (i) and (ii)
b (i), (ii) and (iii)
c (iii) and (iv)
d (ii),(iii) and (iv)

Question 3

Select the correct statement.



(a) Heterotrophs do not synthesise their own food.

(b) Heterotrophs utilise solar energy for photosynthesis.

(c) Heterotrophs synthesise their own food.

(d) Heterotrophs are capable of converting carbon dioxide and water into carbohydrates.

How are nutrients returned to the soil after being absorbed by the plants?

Choose the correct option for the underlined verb phrase.

Buying a house for oneself has become a difficult proposition.

Question 30

Choose the forms in which most plants absorb nitrogen

(i) Proteins

(ii) Nitrates and Nitrites

(iii) Urea

(iv) Atmospheric nitrogen



(a) (i) and (ii)

(b) (ii) and (iii)

(c) (iii) and (iv)

(d) (i) and (iv)

Question 11
Give one example of an animal that can live both in water and on land.

Radioactive pollution can cause

Give the function of

(a) Afferent nerves

(b) Efferent nerves

Spinal cord is involved in reflex action. It is the processing unit for reflex actions because __________.

Which of the following is/are necessary for the process of photosynthesis in plants?

The malfunctions of the endocrine system results in dwarfism ,giantism, diabeties mellitus etc. What is the root cause for such diseases?

1. Can you find a plant in your house or in your neighborhood which has a long but weak stem?


2. Write its name. In which category will you place it?

Question 7

Organisms which synthesize carbohydrates from inorganic compounds using radiant energy are called



(a) decomposers

(b) producers

(c) herbivores

(d) carnivores

Which of the following is not a function of Golgi apparatus?

Question 1

Why do organisms need water?

What is major function of cotyledons in a seed ?

Give reason- bacteria present in the circumstances of ruminants

What will happen if we take a potted plant and keep it in the dark for one full day?

State whether the following statements are True or False. If false, correct them. [5 MARKS]
(a) Yak hair is not used to make woolen fabric.
(b) In the process of obtaining wool from fleece, sorting is done after scouring.
(c) The rearing of silkworms for obtaining silk is called silviculture.
(d) In India, camels and goats are generally reared for obtaining wool.
(e) Silkworms are caterpillars of the silk moth.

1. 88

Noise pollution ______ the efficiency of work.