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What is the cause of rabies ? [ 2 MARKS ]

Which of the following is a result of natural selection?

The function of tRNA is_________

Question 2 (c)
Mark (T) if the statement is true and (F) if it is false:
(c) The gall bladder temporarily stores bile.

Which process maintains a balance between the level of carbon dioxide and oxygen in the atmosphere?

Causative agent for viral and bacterial diseases

Question 7 (i)
Name the following:
(i) A parasitic plant with yellow, slender and tubular stem.

The accessory excretory human organs are:

Which of the following hormones play a role during ovulation and menstrual cycle?

Which one of the following is not present in urine?

Explain causes and effects of high blood pressure. [3 MARKS]

What is the role of heart in circulatory system ? Also explain it's mechanism elaboratlye.

It's written that ABA hormone inhibits plant growth and metabolism, their days that ABA plays an important role in seed development and maturation. How is that possible?

Maximum survival and reproductive capacity shown in a population under optimal environmental conditions is called

How many of the following given are broadly utilitarian arguments for conserving biodiversity?

(i) Economic benefits which are countless

(ii) Pollination

(iii) Release of $O_2$ by plants

(iv) Aesthetic pleasure of seeing nature

(v) intrinsic value of every species.

(vi) Medicinal drugs derived from plants

Specific ions are acquired by root hairs by the process of:

Question 6 (a)
Fill in the blanks:
a) Green plants are called __ since they synthesise their own food.

Read the statements given below and fill up the blanks with the correct words listed in the box.
$\begin{array}{c}\text{deep, ductless, nutrients, thyroxine}\end{array}$
(a) The meal that includes all ___ is a balanced diet.
(b) Insufficient production of ___ in the tadpoles leads to their incomplete development.
(c) Endocrine glands are also called ___ glands.
(d) After attaining puberty boys develop a___ voice.

A chromosome whose one arm is really short compared to the other is

In the absence of muscle cell how do plant cell show movement

What is the main hormone for seed germination activation?

What are the effects of light on transpiration

What are the limitations of electrical impulse.

Simple definition of pyruvate just 2 line

Which of the following options is correct based on the statements given?

Statement 1: Gaseous exchanges in plants usually occur on the dorsal side of leaves.

Statement 2: Tiny pores called stomata facilitate this exchange.

Statement 3: The gases exchanged are carbon dioxide and water vapour only.

Select the growth inhibitor among the following:-

Which of the following step of photosynthesis can take place at night?

When an insect sits on the flower of a plant then some particles A present in the top of little stalks in the flower attached to its body hair. When this insect now sits on the flower of another similar plant, then particles A attached to the hair of insect are put on the top of a flask-shaped organ at the centre of the flower. The particle, A grows a long tube B from the top of a flask-shaped organ through which C moves down and reaches the bottom part of the flask-shaped organ. Here C fuses with the nucleus of D contained in structure E. The fusion of C and D forms a new cell F which grows and develops into a seed of the plant.
(a) What are particles A? What is the process of transferring A from one flower to another flower of the similar plant by the insect known as?
(b) What is the name of tube B?
(c) What is C which moves down through the tube B?
(d) Name D and E.
(e) What is F?

Which of the following hormones have their role during ovulation and Menstrual cycle?

Which process releases a greater amount of energy- aerobic or anaerobic respiration?

There are five animals A, B: C, D and E. The animal A uses its modified forelimbs for flying. The animal B uses its forelimbs for running whereas the animal C uses its forelimbs for grasping. The animal D can live on land as well as in water and uses its forelimbs to prop up the front end of its body when at rest. The animal E which respires by using spiracles and tracheae uses wings for flying but its wings are analogous to the modified forelimbs of animal A.
(a) What could the animals A, B, C, D and E be?
(b) Why are the forelimbs of animals A, B, C and D called homologous organs?
(c) What does the existence of homologous organs in animals A, B, C and D tell us about their ancestors?
(d) Why are the modified forelimbs of animal A and the wings of animal E called analogous organs?
(e) State whether animals A and E have a common ancestor or not.

The ___ has no basic shape or size; its structure varies according to the needs of the cell. Name the organelle.

Exchange of gases in alveoli occurs by the process of ________

Induced fit theory relates to working mechanism of:

Having more than the normal count of platelets in one microliter of blood is known as ___

The term 'hormone' was first coined by _______

What are the factors leading to speciation? How do these factors lead to speciation?

What is food chain ?

Which of the following is an end product of anaerobic respiration?

In the fallowing experiment for photosynthesis, a leaf is inserted into a conical flask containing potassium hydroxide. What is the aim of the experiment?

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What criteria do we use to decide whether something is alive

Q16. Consider the following statements about Minimum Support Prices (MSP):

1. MSP is the price at which government purchases crops from the farmers, whatever may be the price for the crops.

2. The minimum support prices are announced by the Government of India at the beginning of the sowing season for certain crops on the basis of the recommendations of the Ministry of Agriculture.

Which of the above statements are correct?

What is known as the energy required to start a chemical reaction?

Look at following matches:

1. Spinal Cord - Reflex action
2. Cerebrum - Thinking, Decision making
3. Cerebellum - Controls heartbeat
4. Medulla oblongata - Controls cardiac centre

Which of the given matches are correct?