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Identify the problem(s) faced by the farmers of our country.

Which chemical fertilizer is used in wheat crop

The lungs are covered by a two-layered membrane called the:

Peanut is a _______ plant.

Most common asexual reproductive structures in algae and fungi are respectively.

The increase in food grain production after the introduction of improved varieties of crops is often referred to as:

Organisms that feed on both plants and animals are called ____.

Which of the following methods check the nature of the soil, the elements in the soil and other factors using modern techniques?

What are genetic material crops also knows as GT crops?

Select the option that shows the correct sequence in the life history of a butterfly

Why boys have mustache on their face but girls don't have?

Write the full name of (i) AIDS, and (ii) HIV.

The pulmonary artery carries______ blood from the right ventricle of the heart.

Find the correct match from the following:
$\begin{array}{cc}\text{Column A}& \text{Column B}\\ 1.\text{Male gamete}& \text{a}.46\text{chromosomes}\\ 2.\text{Female gamete}& \text{b}.\text{Sperm}\\ 3.\text{Diploid human cell}& \text{c}.\text{Chromosome number reduced to half}\\ 4.\text{Meiosis}& \text{d}.\text{Egg}\end{array}$

Define (i) biodiversity, and (ii) ecosystem.

Different cells have different sizes. Arrange the following cells in an ascending order of their size. Choose the correct option among the following:

(i) Mycoplasma (ii) Ostrich eggs

(iii) Human RBC (iv) Bacteria

Answer in detail. How does reproduction takes place in plants?

Vitamin C causes _____________.

Which organ in females produces gametes?

Which of the following complexes are involved in photochemical reactions?

(I) Photosystem-I

(II) Photosystem-II

(III) Cytochrome b6/f complex

(IV) ATP synthase

Match the names of scientists given in column A with their contributions in column B.

$\begin{array}{cccc}& A& & B\\ \left(i\right)& T.W.Engelmann& \left(p\right)& Darkreaction\\ \left(ii\right)& FredrickBlackmann& \left(q\right)& Lightreaction\\ \left(iii\right)& MelvinCalvin& \left(r\right)& Actionspectrumofphotosynthesis\\ \left(iv\right)& RobinHill& \left(s\right)& Lawoflimitingfactors\\ & & & \end{array}$

__ microorganism live alone.

Distinguish between

(I) Meristematic tissue and Permanent tissue

(II) Simple permanent tissue and Complex permanent tissue

What are the characteristics of mammalian virus? What are it's side effects?

How many sperms are released at a time?

State the causative micro-organisms and modes of transmission of the following human diseases.

Polio, cholera, hepatitis B.

Describe the sprinkler system of irrigation. State its advantages.

Which of the following is an objective of NEISA?

Name any two nitrogen fixing bacteria

Which of these should be major constituent(s) of a teenager's diet?

In today's world, where water is a scarce resource, which among the following irrigation methods is most feasible and sustainable?

Good morning

What chromosomes do transgenders have?

Thank you

Khushi.

Sam went to the market. He noticed a person selling a different kind of seeds. After returning home, he asked his mom "why plants produce seeds"?

Is crow a scravanger

Citrus canker, wilt of Potato and blight in Rice are _______ diseases.

Name the factor on which shape of the cell depend

What are zaid crops ? What months zaid crops are grown ? What months the Rabi crops are grown ? What months the kharif crops are grown ?

The basic similarity among all the living organisms is that they are made up of:

Which of the following can spread AIDS?

Cell wall in green plants are made up of which substance?

Plants reproduce with the help of seeds, but new plants may also be produced from other parts of the plant. This type of reproduction is called __.