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The food relation from grass $\to$ deer $\to$ tiger $\to$ decomposer is called ___.

The part of a cell which plays a role in inheritance is :

Write
notes on −

(a) Adam’s
apple.

(b) Secondary
sexual characters.

(c) Sex
determination in the unborn baby.

____ is an extinct variety of wild zebra from South Africa.

Name the process by which water moves outward and inward of the cell.

Write the component statements of the compound statement and check whether the compound statement is true or false.

'All living things have two legs and two eyes'

Q53) The Cabinet Committee on Economic Affairs (CCEA), chaired by the Prime Minister Shri Narendra Modi, has given its approval to a new scheme the “Pradhan Mantri Krishi Sinchayee Yojana” (PMKSY). The major objective of the PMKSY doesn’t include:

1) To achieve convergence of investments in irrigation at the field level

2) To expand the cultivable area under assured irrigation

3) To improve on-farm water use efficiency to reduce wastage of water

4) To enhance the adoption of precision-irrigation and other water saving technologies

Code:

Organisms of Kingdom Protista mark the beginning of a new type of life form. How?

Give scientific reasons.

(a) A condenser has two taps.

(b) At dawn, in winter, we see dewdrops on leaves of trees.

Name the causative micro-organisms of the following animal diseases :

(a) Food and mouth disease (b) Anthrax

What is the size of prokaryotic cell?

When a centimeter thick surface is illuminated with light of wavelength $\lambda$ the stopping potential is $V.$ When the same surface is illuminated by light of wavelength $2\lambda$ the stopping potential is $\frac{V}{3}.$ The threshold wavelength for the surface is-

Choose the most appropriate explanation for ecological succession

Which of the following is true about pasteurisation?

A number of species of hornbill are threatened with extinction. Important reason for its fast falling numbers is

Forests are natural resource. Expain

Explain how microorganisms are friendly to us. [5 MARKS]

Name the male reproductive organ responsible for the production of sperms.

The transfer of larva into adults through drastic change is called:

The binomial system of classification was developed by _____.

Which of the following are true for the immune system?

Which of these diseases is/are caused by fungi?

Which of these elements come under the category of "Primary Macro-nutrients"?

Which of the following factors are used in the blood coagulation/blood clotting process?

Observe the given picture and identify which of the following statement is correct.

Statement 1: This is an egg cell.

Statement 2: It contains two group of cells - white cells surrounding the yellow cells.

Statement 3: It is a single cell which will divide to give rise to a new organism

Statement 4: A single cell can never be as big as an egg.

More sugarcane juice can be extracted by spraying with:

What do you mean by transplantation? Which crops are grown by this method

1. During adolescence, immune system is very weak


2. A proper diet is needed to cater for the rapid growth that take place in adolescents


3. Food tastes best during adolescence


4. All of these

Leaves lose more water from

The gland that is responsible for controlling all the other endocrine glands is ___.