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With the help of a labelled diagram, describe the basic design of a Bioiphere Reserve.

Name two food materials which are usually preserved by deep freezing.

Question 7 (d)
Fill in the blank:
(d) The decaying leaves and animal droppings in a forest enrich the __.

____________ conducts commands from the brain to muscles of the trunk and limbs.

Pick the odd one out.

Which of these are not caused by transpiration?

What is a vacuole in a cell?

Which of the following processes makes an adolescent capable of reproduction?

___________ hormone is secreted when a person is under severe stress, fearful or angry.

DIRECTIONS: The following questions have four choices (a), (b), (c) and (d) out of which only one is correct. You have to choose the correct alternative.

Lipids and proteins constituting the cell membrane are synthesized at:

The common name of Canis lupus is

Reproduction in plants by vegetative propagation can occur through

Disease existing at or before birth is called a _____ disease.

Pituitary gland is located below the ___ .

Earth is heated by a part of reflected radiation (from the surface) is trapped by the atmosphere.This phenomenon is called _________.

Location of adrenal glands

What are the methods used by plants to get rid of wastes? [3 MARKS]

The major advantage of cross pollination in angiosperms is ________

Ovary matures to form the __(i)_____ while ovule forms ____(ii)____.

Which of these is the best description of transpiration?

Which of the following organelles function in the production and storage of energy?

(a) What is meant by the 'primary sexual characteristics' in humans? State two primary sexual characteristics in boys and two in girls.

(b) What is meant by 'secondary sexual characteristics' in humans? Explain with the help of two examples.

Give 10 lines on the usefulness of microorganisms in our lives.

Name some of the preservatives which are used i the preservation of fruits and vegetables as pickles.

What is micobial decay?

Identify the parts in the given picture.

Which of the following represent asexual reproduction?

Name one 'bilogical nitrogen-fixer'.

(a) What is meant by 'reproductive health'?

(b) State the conditions necessary to maintain good reproductive health during adolescence.

According to the classification of crops as kharif crops or Rabi crops, please tell which type of crop is triticale and buckwheat.

What is a National Park ? Name any two National Parks of India. Where are these National Parks located ?

Which of the following are kharif crops and which are rabi crops ?

Wheat, Paddy, Gram, Maize, Mustard, Cotton, Soyabean, Linseed, Peas, Groundnut

Which method of irrigation conserves water to the maximum?

Which is not a viral disease in plants?

Which of the following events are a part of a menstrual cycle?

i. The pituitary gland stimulates ovaries to produce oestrogen and progesterone hormones.

ii. Egg or the female gamete is released.

iii. Oestrogen stimulates the uterus to build up extra tissue and blood layer to make the wall nutritious for a zygote.

iv. In the absence of fertilisation, the egg or the female gamete is eliminated from the body along with the uterus lining which comes out as blood at the time of menstruation.

Which one of the following viruses contains both DNA and RNA?

Which of these features makes Angiosperms unique?

Diabetes mellitus is caused by deficiency of ______.

In today's world where water is a scarce resource, which among the following irrigation methods is most feasible and sustainable?

Observe the below pictures and identify the category of organs.

Why should we protect our crops during storage? [1 MARK]

Area where two ecosystems overlap each other is known as

Left ___ of heart pumps blood to all parts of the body?

Write a note on: (a) Cytoplasm (b) Cell Membrane [3 MARKS]

Match the discoveries with the scientists.

$\begin{array}{cc}Scientist& Discovery\\ \text{a. Anton Van Leeuwenhoek}& \text{i. All animals are made of cells}\\ \text{b. Robert Hooke}& \text{ii.Microscope}\\ \text{c. Theodore Schwann}& \text{iii.Cork has boxed structures}\\ \text{d. Matthias Schleiden}& \text{iv.All plants are made of cells}\end{array}$