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Explain how conversion of energy takes place during photosynthesis.

What is meant by reproduction?

On an extremely hot day, the rate of transpiration would:

From the terms given below choose the parts that are involved in maintaining equilibrium in the body.

Eustachian tube, saccule, cochlea, utricle, vestibular nerve, cerebellum, oval window, semicircular canal

What is the blood sugar level of a healthy person?

The smoke released from various sources may get mixed with dust particles and small drops of fog to produce ___

Question 1

Which organisms are called primitive and how are they different from the so-called advanced organisms?

Identify the correct set of statements related to the movement of substances through vascular tissues.

I. Xylem mainly translocates water, minerals salts and also organic solutes.

II. Phloem mainly translocates a variety of organic solutes and also inorganic solutes.

III. Xylem transports substances from roots to aerial parts of the plants.

IV. Phloem transports substances bidirectionally.

The area where the renal artery enters the kidney and the renal vein and the ureters exit the kidney is called ______________

Question 40

Differentiate between inherited and acquired characters. Give one example of each type.

How can biodiversity be conserved

Select the correct defence mechanism in which the lymphocytes recognize pathogens and destroy them.

Ram had a meal which consisted of soybean sprouts and its dry chunks with milk. He suffered from indigestion and it resulted due to abnormality in the functioning of the glands of his stomach according to his doctor. It could be because of ________ in his stomach.

In a given shell, the order of screening effect is

In a typical osmotic system there will not be net movement of water between two solutions, when the

The first chamber of the heart that receives blood in the cardiac cycle is known as:

Oval window: middle ear :: Semicircular canal: ________

2. We give water to the roots of the plants and not to the leaves or stem. Is there any special structure present in the roots of plants for the transportation of water? Do plants also possess a system for the transportation of food from leaves to all the other parts?

State three main differences between asexual and sexual reproduction. [3 MARKS]

when we breath in ,the oxygen we take diffusses with blood but what happens when we do not breath in and the heart still pump blood for purificationto lungs?

Lacteals are lymphatic vessels found in the

If tall is dominant over short, then which of the following characters will be expressed when both the dominant allele and recessive allele are present?

A woman uses pills A as a method of birth control (or preventing pregnancy). The pills A stop the ovaries from releasing ovum into oviducts. Another woman uses pills B as a method of birth control. The pills B kill the sperms and prevent pregnancy.
(a) What do the pills A contain?
(b) What is the common name of pills A?
(c) What do the pills B contain?
(d) What is the common name of pills B?
(e) What is the general name of these methods of birth control?

If we happen to touch a hot object unknowingly, we immediately pull back our hand. What is this type of action known as?

The focal length of the eye lens increases when eye muscles

Out of the wing of a bird, wing of an insect and the wing of a bat :

(a) which two are homologous organs?
(b) which two are analogous organs?

Name the
various endocrine glands and the hormones secreted by them. How does
the endocrine system affect our behaviour?

Chose the correct statement to fill the blank.

The Refractory Period, is the period soon after an action potential during which the neuron resists the production of another action potential.

During refractory period _____________

सामने की सीट पर बैठा आदमी उठा और अपनी दाहिनी ओर वाला दरवाज़ा खोलकर बाहर कूद गया।

(क) यह व्यक्ति कौन था?

(ख) बस में कितने दरवाज़े थे?

(ग) आगे क्या हुआ होगा? कहानी सुनाओ।

During day time we get oxygen from plants due to photosynthesis then during night from wjere do we get oxygen from?

Question 12
Choose the correct statement

Impotence is

Write the function of bile ,HCl , blood pigment.

Which of the following forces contribute to the ascent of sap

The smallest blood vessel in the body is: