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Guano is a natural fertilizer that was extensively used in the last century. Guano is exceptionally rich in some plant nutrients and is highly sought after by organic farmers today.

Guano is made up of droppings of sea birds such as booby birds, cormorants and gulls. Since they eat sea food, they are essential in bringing nutrients from the sea to the land.

Now that you know what bird droppings are made of, which among the following nutrients is Guano most rich in?

Which of the following tissues connect two bones?

What value does Rohini show?

If Earthworms breaths with their moist skin,and if there skin becomes dry they die.Will they be able to breath inwater or they will die?

Which of the following are charcteristics of bones of a bird?

Which of the following is Chlamydomonas?

Electrical impulse travels in a neuron from

If an Athlete suffers from muscular cramps while running a race. How can we help him overcome the cramps?

Cerebrospinal fluid is present between _______ .

(a) Wind is ________ air.

(b) Winds are generated due to ________ heating on the earth.

(c) Near the earth’s surface ________ air rises up whereas _______air comes down.

(d) Air moves from a region of __________ pressure to a region of ________ pressure.

Which method do ferns use to reproduce?

Platyhelminthes are best described as

Which part of the female reproductive part of the flower receives pollen grains?

After passing through the nostrils, air enters the:

Frustule is characteristic of

What are capillaries?

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Which of the following organelles is present both in prokaryotes and eukaryotes?

Micronutrients are essential to plant growth and health that are only needed in very small quantities. Which of the following are not micronutrients in plants?

(1) Zinc (2) Manganese

(3) Iron (4) Sodium

(5) Potassium (6) Copper

Code:

Collections of nerve cell bodies outside the CNS are called _____.

Label the parts of plants used in the grafting process.

The viral disease ranikhet is associated with:

Digestion is the process of breakdown of complex food substances into simpler substances. Secretion of various glands like stomach, salivary gland, pancreas, liver and intestinal gland are involved in this process.
Select the gland whose secretion contains lipase and converts fats into simpler fats.

If insectivorous plants are partially hetrerotrophs then their should be a specific name for it?

In cutting method of vegetative propagation, cuttings are mainly taken from:

Transpiration is important for plants because:

I: It removes extra water

II: It cools down the plant

III: It helps in transport of food

IV: It helps in transport of water upwards

Name the chambers of the heart.

Which part of the flower is usually green in color?

Among the given substances filtered in the nephron, which are selectively reabsorbed?

Match the following :-
$\begin{array}{cc}& \\ \text{Food items}& \text{Adulterant}\\ \text{A. Milk}& \text{i. Tamarind seeds}\\ \text{B. Coffee powder}& \text{ii. Brick powder}\\ \text{C. Chilli powder}& \text{iii. Chalk powder}\\ \text{D. Rice flour}& \text{iv. Water}\end{array}$

what is adenanie triphosphate?

Match the items in Column 1 with items in Column 2.

$\begin{array}{cc}\text{Column 1}& \text{Column 2}\\ \text{i) Calcium}& \text{a) Digestion of food}\\ \text{ii) Magnesium}& \text{b) Thyroid gland}\\ \text{iii) Iodine}& \text{c) Growth of bones}\end{array}$

Match the following:

$\begin{array}{cc}\text{Column I}& \text{Column II}\\ \text{i. Larynx}& \text{a. Air sacs}\\ \text{ii. Trachea}& \text{b. Lid of larynx}\\ \text{iii. Alveoli}& \text{c. Voice box}\\ \text{iv. Epiglottis}& \text{d. Wind pipe}\end{array}$

Which one of these structures is not present in an animal cell?

Living organisms around us which cannot be seen by our naked eyes are known as: