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Which of the following is responsible for the transport of solutes?

Hormone produced by hypothalamus is __________

Assertion: Less water content in soil decreases transpiration in plants.

Reason: Dehydration leads to closure of stomata on the surface of leaves.

How do microorganisms spoil food

The World Health Organization (WHO) has declared the end of Ebola virus transmission in the Republic of Guinea. Consider the following statements:

1. World Health Organisation (WHO) approved the ReEBOV Antigen rapid test kit for Ebola virus disease (EVD).

2. Camels are considered to be the natural host of the Ebola virus.

3. Ebola first appeared in 1976, in Nzara and Sudan. Later it was reported in Yambuku, Democratic Republic of Congo.

Select the correct answer from the code given below:

Identify the type of food chain:
Dead animal $\to$ Blowfly maggots $\to$ Common frog $\to$ Snake

The disease causing organisms are referred as ____________.

Define adolescence.

State some of the changes which take place in boys and girls during adolescence.

A B, C, and D are the basic parts of all the cells. Part A contains thread-like structures called E which transfer the characteristics from parents to their offspring. Part B uses glucose and oxygen to produce energy whereas part C controls the movement of substances 'into the cell' and 'out of the cell'. Part D is a transparent, jelly-like material. What could A, B, C, and D be?

Which of the following is/are the component(s) of xylem tissue?

Identify the main artery which carries oxygenated blood from the heart to the whole body.

Adding manures and fertilizers help in

Which of the following cannot be used as a food preservative ?

(a) sodium metabisulphite (b) sodium hydroxide (c) sodium benzoate (d) citric acid

Assertion (A): A sanctuary is formed for the conservation of animals only.
Reason (R): Some restricted human activities are allowed in sanctuaries.

Write three basic components of a cell. Write function of any two.

What are the precautions to eradicate malaria

Of which of the following processes is breathing a part?

Which of the following is a function of the amniotic fluid?

Which one of the following best describes the organization of the material presented in the passage?

Match the following characteristics of living organisms with the details.

$$\begin{array}{cc}\text{Characteristic}& \text{Details}\\ 1.\text{Response to stimuli}& \text{a) Giving rise to another organism of the same kind}\\ 2.\text{Reproduction}& \text{b) Reaction to sensations like touch, light, heat, cold and sound}\\ 3.\text{Adaptation}& \text{c) The event at which an organism ceases to live}\\ 4.\text{Death}& \text{d) Ability of an organism to adjust to the current environment}\end{array}$$

ecosystem for lion?

Which one of the following is categorized as a parasite in true sense?

Do sexually transmitted diseases spread only from male to female , female to male? Means, can they pass from same sex like male to male or female to female? How can they be prevented?

Given below are the components required to observe the structure of cells. Find the correct component matched with the correct function.

Q11. Consider the following statements:

1. The IUCN conservation status of Black Buck is “Endangered”.

2. Velavadar Blackbuck Sanctuary is in Andhra Pradesh.

3. Black Buck is the state animal of Andhra Pradesh.

Which of the above statement/s is/are correct?

Question 3

Which of the following is the smallest forest animal?
(a) Fox
(b) Boar
(c) Bison
(d) Porcupine

Why should care be taken while using weedicides? Suggest steps to prevent contamination. [5 MARKS]

What changes take place in the body after puberty?

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

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

In which countries of Europe.the population has decreased

A. Italy ,Spain

B. Italy , Germany

C. Spain , Russia

D. Switzerland

___ are the non-membranous cell organelles made of basic proteins and r-RNA are concerned with protein synthesis.

Why can't yeast reproduce in a cold temperature ?

What are the importance of transpiration in plants?

What is the mode of transmission of the plant disease citrus canker?

Water evaporates through tiny openings present on the surface of leaves known as ___.

The ratio between the number of male gametes produced by pollen grain and the female gametes produced by embryo sac is -

Appu’s friend Anu comes from a village that lies on the banks of the Ganga river in Bihar. Despite having abundant water in the river throughout the year, Anu says that there is always a water shortage. Which of the following could be a reason for the water shortage in her village?

In a pond ecosystem, the pyramid of biomass is:

What are living and non living things.Distinguish between naturally occurring materials and man made materials with examples.

The testes produce male gametes called ________ .

Question 1
Indicate whether the following statements are True (T) or False (F).
(a) Unicellular organisms have one-celled body. (T / F)
(b) Muscle cells are branched. (T / F)
(c) The basic living unit of an organism is an organ. (T / F)
(d) Amoeba has irregular shape. (T / F)

Yeast is used in the production of :

(a) sugar (b) alcohol (c) hydrochloric acid (d) oxygen