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Why do we only use a small twig in the potometer setup ?

There are four organisms A, B, C and D. The organism A eats only the flesh of other animals as food. The organism B can eat grains, fruits and vegetables as well as meat and fish. The organism C can make the food itself from simple inorganic substances present in the environment by utilising sunlight energy. On the other hand, organism D eats only plants and their products as food.
(a) Which organism is (i) omnivore (ii) herbivore, and (ii) carnivore?
(b) Which organism is an autotroph?
(c) Which organism is/are heterotroph(s)?
(d) Which organism can be a producer?
(e) Which organism is/are a consumer (s)?
(f) Give one example each of organisms which could be like (i) A (ii) B (iii) C, and (iv) D

Define Holozoic nutrition

A cell is grown in a solution containing radioactive nucleotides for one generation. It is removed from the radioactive solution and grown in a normal medium in the next generation. If a dotted line represents a radioactive DNA strand and a solid line represents a non-radioactive DNA strand, which of the following depicts the DNA of the four cells in the second generation?
(correct answer + 2, wrong answer - 0.50)

Process which leads to the synthesis of RNAs is called:

Regarding the assertion and reason, please select the right option.
Assertion [A]: The clear looking water from a well contains high amount of minerals.
Reason [R]: Water impurities are always microscopic or submicroscopic; clear water need not be potable water.

Explain why, when air is taken in and let out during breathing, the lungs always contain a residual volume of air.

Which of the following is the first growth hormine to be discovered in plants?

Name the disorder caused by the deficiency of secretion of the gland shown in the picture. How can it be corrected?

Photochemical smog is formed :

Infectious diseases are caused by __.

The production of which hormone makes us sleepy

Which part of the human body interprets the images formed on the retina?

Question 2
What is the primary characteristic on which the first division of organisms is made?

Which of the following species does not contain $s{p}^3$ hybridization?

What causes gigantism?

The cross between an individual with unknown genotype and recessive parent is called a ___.

A.Write any two functions of pituitary gland.
B. Name the process which increases thermal conductivity of stainless steel cook wares by adding copper.
C. In a forest increasing number of herbivores leads to air pollution. Justify.

D.What are the advantages of modern periodic table
Arrange the following elements into decreasing order of their Atomic size. Na, Al, Ar, S, P
E. Write the neat diagram of blast furnace of iron and label slag, waste gases.
VI Answer the following questions:

F.The cook wares made by stainless steel are not get rust. Why?G.Dengue fever‟ is common in water logging areas. Why?

H. What are the advantages of Mendeleev‟s periodic table?

I. Write any two applications of silicon compounds.

J.Name the glass used to prepare laboratory glass articles. What is the specialty of the glass?

K.Write the chemical equations of the reactions takes place in the blast furnace of iron Extraction from
Hematite.

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Respiration and photosynthesis are just the

Which of the following is an example of codominance?

Explain why, a land plant may die if its roots remain waterlogged for a long time.

Question 2

What are the methods used by plants to get rid of their excretory products?

According to the passage, Charles Darwin was which of the following?

Water droplets are seen along the leaf margins of herbaceous plants during early morning, when evaporation is low. This phenomenon is termed as ______.

Identify the label ‘A’ in the following diagram.

Spindle fibres disappear in which stage of meiosis?

Match the following characters with their contrasting traits of Pea plant.

From the given options, identify the correct reason for such a huge variation in the butteflies and chillies.

The four-chambered heart is found in

Draco

Hemidactylus

Tortoises and turtles

Crocodile

ECG is used for recording electric waves found in the ___.

The mode of nutrition in green plants which helps them to produce their own food is called___________.

Select the correct determiners for the blanks.
_______ people had trouble sleeping at night after consuming _______ pills.

Name a non-biodegradable waste.

Lungs lie in the thoracic cavity separated by __ from the abdominal cavity.

In ___ cells, the chromosomes are haploid.

What's the difference between the function and location of the epididymis and the vas deferens?

A doctor advised a person to take an injection of insulin because

Plants prepare there own food, so they are called _____.

Based on the figure given below which of the following statements is NOT correct?

The type of immunity which already exists in the body due to the genetic makeup of an individual is called___________.