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Q12. Consider the following statements

1. Kaziranga National Park has the highest number of Rhino population in the India.

2. The Manas National Park and the Pobitora Wildlife Sanctuary are located in Assam.

Which of the statements are incorrect?

Which of the following enzyme is called as the 'genetic scissor'?

What is the average cell cycle span of a human cell?

During the pairing of chromosomes in meiosis, the.................... chromosomes come to lie side by side

How does a man use his forelimbs?

What would happen if the small intestine stopped working?

Which artificial propagation method is used for the production of jasmine plants ?

The process of breakdown of nutrient in cell to release energy is known as what?

Label the image

Vaccine is the

When a human female reaches a certain age then vaginal bleeding occurs for a few days after regular time intervals.
(a) What is this process known as (i) in scientific terms, and (ii) in everyday language?
(b) At what approximate age this process starts in human females? What is the human female said to have attained at this stage?
(c) After how much time is this process repeated? For how many days this process usually lasts?
(d) What does the onset of this process in human females signify?
(e) At which particular event in the life of a human female this process stops temporarily but starts again?
(f) At which approximate age of human female this process stops permanently?

Oxygen is an essential requirement for aerobic respiration but it enters the respiratory process at the end? Discuss.

A potometer directly measures the rate of____________.

An organism that maintains constant body temperature is called a ___.

One of the examples of radiation pollutants is

(a) Sulphur dioxide

(b) Ozone

(c) Iodine - 131

(d) Discarded fused electric bulbs

Cheese is produced with the help of ___

Out of xylem and phloem, which one carries materials :
(a) upwards as well as downwards ?
(b) only upwards ?

Define (i) saprophytic nutrition
(ii) parasitic nutrition, and
(iii) holozoic nutrition.

Give one example of each type.

The _______ receptors detect odour molecules.

Fill in the following blanks with suitable words :
(a) The human forelimb and bat's forelimb are an example of ___ organs whereas an insect's wing and a bat's wing are an example of ______ organs.
(b) The evolution of the eye is an example of evolution by ___
(c) The scientific name of all human beings is ___
(d) Broccoli has evolved from ___ by the process of artificial selection.
(e) The theory of natural selection for evolution was proposed by ___

In pulmonary circulation, blood enters the lungs from _________ and leaves the lungs to ________.

What are enzymes? Define apoenzyme and coenzyme.

Chemically hormones are________

What is a gland and bile

A balloon is filled with 3.0 L of helium at 310 K. The balloon is placed in an oven where the temperature reaches 340 K. What is the new volume of the balloon?

Which fibres are responsible for transferring information from one hemisphere of brain to the other?

(a) What are the male and female gonads in human beings? Mention their functions.
(b) State the advantages of sexual reproduction over asexual reproduction.

Incubation period of Haemophilus pertussis is ______.

Weismann cut off the tails of mice generation after generation, but tails neither disappeared nor shortened, proving that _______.

From the diagram given below, choose the most appropriate option.

Which of the following plant part exhibits negative phototropism ?

(a) root

(b) branch

(c) leaves

(d) stem

Give examples of diseases that spread through air.

Identify the following labelled parts of the pituitary gland.

The region in the eye where the rods and cones are located is the

(a) retina (b) cornea (c) choroid (d) sclera

The plant hormone produced during adverse environmental conditions is ______.

State whether the following statement is true or false :
Human beings have evolved from chimpanzees

Choose the correct order in which egg travels from the ovary to the uterus.

Which of the following statement is incorrect about insulin?

Cytokinins are produced in root tips and transported to all parts of the plant through _______ cells.

Are yeasts plants?(because in a reference book, yeast was referred to as a non-green heterotrophic plant)

A mixed nerve is one which

(a) carries sensations from two or more different sense organs .

(b) contains both sensory and motor fibres.

(c) has a common root but branches into two or more nerves to different organs.

(d) has two or more roots from different parts of brain.

Find the odd one out.

Cornea, Cochlea, Lens, Optic nerve