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Explain the process of fertilization in frogs.

State the main symptoms of goitre.

What type of fission takes place in Amoeba ?

The bubonic plague is caused by ___.

Which of the following organelle is not found in the root cells of a plant?

Which of these categories do spinal nerves come under?

Amoeba moves with the help of

The interaction between sea anemone that has stinging tentacles and the clownfish that lives among them is:

Light-dependent reactions include _______.

Which of the following is true about cell wall?

Define the following with example: (a) Budding (b) Binary fission
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During the systolic phase of cardiac cycle, blood _____________.

What do the ovaries in a woman produce ?

Name the hormone secreted by pancreas. What is the function of this hormone ?

Arrange the following discoveries regarding cells in chronological order.

i. All plants and animals are made up of cells.
ii. Invention of microscope.
iii. Cork has structures like cell.

Match the plant diseases with the type of microrganisms that causes it.

$$\begin{array}{cc}\text{Column 1}& \text{Column 2}\\ \text{a. Citrus canker}& \text{i. Fungi}\\ \text{b. Rust of wheat}& \text{ii. Bacteria}\\ \text{c. Yellow vein mosaic}& \text{iii. Virus}\end{array}$$

Which among the following is not a characteristic feature of anterior pituitary gland?

Where does the exchange of gases take place in the respiratory system?

Animals reared at home or in farms have to be provided with proper food, shelter and care. This is known as __.

Asexual reproduction is :

(a) a fusion of specialised cells

(b) a method by which all types of organisms reproduce

(c) a method producing genetically identical offsprings

(d) a method in which more than one parent are involved

Chemicals used to control weeds are ___ .

Which of the following groups do Yeast and Agaricus belong to?

The microbe which is used to control oil spills is

What is the given instrument called?

In one of the options given below, the answer is hidden. Unscramble the words to get the name of the instrument and choose that option.

What is the role of Nitrogen in containing the properties of Oxygen gas?

The pond looks green due to excessive growth of _______ in them.

Consider the following statements about Azolla,

Which of the above statements is/ are correct:

Which of the following is true for a virus?

Growing exotic fruits and indigenous vegetables for commercial use is known as:

The process by which chlorophyll breaks down into newer substances is better known as ______

Pine, Oak, Birch, etc. can be examples of the flora of the ___________ forests.

Which cells produce sperms

The most rapidly dwindling natural resource in the world is :
(a) water
(b) soil
(c) sunlight
(d) forests

Kingdom Monera consists of

What archea?

Taxonomic hierarchy refers to

Twelve more ATP molecules are required for glucose formation in $C_4$ palnts because 2 additional ATP molecules are utilized per turn in

Appu has constipation (difficulty in passing stools) and the stools (excreta) that he passes with great difficulty are very dry. The doctor advises him to take a laxative known as milk of magnesia, which will allow Appu to pass stools easily.

On which of the following organs do you think that the laxative primarily acts?

Statement I : Fossil fuels are renewable sources of energy.
Statement II: Renewable sources are collected from resources which are naturally replenished on a human timescale, such as sunlight, wind, rain, tides, waves, and geothermal heat.

A person receiving inadequate nutrition or food is known as

Which of the below bird species thought to be extinct have been rediscovered

Codes:

Which of the following suits for the set {banana, orange}?

Identify the incorrect statement(s) regarding the components of PNS.

I. The nerves carrying impulses from CNS to peripheral system are sensory nerves or afferent nerves

II. The nerves carrying impulses from peripheral system to CNS are motor nerves or efferent nerves

III. Afferent nerves bring in impulses from the auditory, visual and touch receptors.

IV. Efferent nerves coordinates impulses towards effector organs.