Explore topic-wise InterviewSolutions in .

___ and ___ pairs of ribs are called floating ribs.

The harmful elements, the recyclable elements and the unrecoverable wastes are components of

How is the skeleton of a bird well-suited for flying?

Name the two biological molecules in which g oxygen and nitrogen are present

Which type of connective tissue is present in hump of camel and blubber of whale ?

On which of the following criteria, is five kingdom classification based?

Ram and Krishna harvested their crops. Ram left his harvested crop outside the house whereas Krishna kept his crops in a small closed room. They were very happily enjoying the festival of pongal. When both of them returned after the festival, Ram's crop was good and Krishna's was spoiled. Why?

Question 9

Which one is the most striking or (common) character of the vertebrates?



(a) Presence of a notochord

(b) Presence of triploblastic condition

(c) Presence of gill pouches

(d) Presence of coelom

Alexander Fleming discovered the

The number of bacteria in a certain culture doubles every hour. If there were 30 bacteria present in the culture origi nally, how many bacteria will be present at the end of $2^{nd}hour,4^{th}hourand{n}^{th}$ hour.

What produces tears in the eye?

Why don't the enzymes in the lysosomes digest the membrane of the lysosomes itself?

What is food preservation? Name three common chemical food preservatives. [3 MARKS]

Air is considered a mixture. Give 3 reason to support your answer.

Match the items in column A with the items in column B and C.

Question 40
Write true (T) or false (F)
(a) Epithelial tissue is protective tissue in animal body.
(b) The lining of blood vessels, lung alveoli and kidney tubules are all made up of epithelial tissue.
(c) Epithelial cells have a lot of intercellular spaces.
(d) Epithelial layer is permeable layer.
(e) Epithelial layer does not allow regulation of materials between body and external environment.

plants and animals are made of different types of tissues.give reasons

State the reason why the testis lie within the scrotum?

Plants that do not have a well-differentiated body fall under which of the following groups?

What are the advantage and disadvantage of composite fish culture

Give examples for phylum Arthropod.

The primary function of leucoplasts is ___ .

A flower in which both male and female reproductive organs are lacking is called as a:

Salk's vaccine is administered to prevent which disease?

Question 40

Match the following A and B

$\begin{array}{cc}\text{A}& \text{B}\\ \text{(a) Smooth endoplasmic reticulum}& \text{(i) Amoeba}\\ \text{(b) Lysosome}& \text{(ii) Nucleus}\\ \text{(c) Nucleoid}& \text{(iii) Bacteria}\\ \text{(d) Food vacuoles}& \text{(iv) Detoxification}\\ \text{(e) Chromatin material and nucleolus}& \text{(v) Suicidal bag}\end{array}$

Edible mushrooms are examples of

Choose the appropriate methods used in organic farming.

Fill the blanks of the table given below.
$\begin{array}{ccc}Indicators& Glycolysis& Kre{b}^{\prime }scycle\\ Partwhereittakesplace& \left(a\right)& \left(b\right)\\ Needofoxygen& \left(c\right)& \left(d\right)\end{array}$

Question 13

Which of the following is most appropriate for aerobic respiration?



(a) $Glucose\stackrel{mitochondria}{\to }Pyruvate\stackrel{cytoplasm}{\to }C{O}_2+H_{2}O+Energy$

(b) $Glucose\stackrel{cytoplasm}{\to }Pyruvate\stackrel{mitochondria}{\to }C{O}_2+H_{2}O+Energy$

(c) $Glucose\stackrel{cytoplasm}{\to }Pyruvate+Energy\stackrel{mitochondria}{\to }C{O}_2+H_{2}O$

(d) $Glucose\stackrel{cytoplasm}{\to }Pyruvate+Energy\stackrel{mitochondria}{\to }C{O}_2+H_{2}O+Energy$

What is integrated farming?

Which of the following do not cause disease in plants?

Answer the following briefly.

1. How can you contribute towards public health?

2. What are the principles of prevention of a disease?

3. Describe a situation which you have experienced where community health is sacrificed due to personal unhygienic habit.

What is the meaning of columnar epithelium?

What is the difference between an organ and an organelle

When yeast respires anaerobically, it produces:

Explain how the meristematic tissue adapt to Rapid cell division?

In which tissue is found anyone of the following structures : neuron, dendrite, cilia, collagen fibres, elastin fibre.