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Which blood vessel in mammals normally carries maximum amount of urea?

Q22. Consider the following statements about United Nations Convention to Combat Desertification (UNCCD):

1. It is only legally binding international agreement to address problem of desertification.

2. India’s Ministry of Environment, Forest and Climate Change (MoEFCC) is the nodal Ministry for this Convention.

Which of the above statements are correct?

Name the device that is used to measure the rate of transpiration.

Enter 2 words or less.

How do non-green plants such as fungi and bacteria obtain their nourishment ?

Q3. Consider the following statements:

1. The Convention on Biological Diversity (CBD) was adopted during the Earth Summit held in Rio de Janeiro in 1992.

2. India enacted the Biological Diversity (BD) Act in 2002 to give effect to the provisions of this CBD Convention.

Which of the above statement/s is/are correct?

Mention if the following statements are true (T) or false (F). Give reason.
(a) Sometimes medicines dropped into the eyes come into the nose and even throat. (T/F)
(b) Ciliary muscles regulate the size of the pupil. (T/F)

(c) The yellow spot of the retina is the region of colour vision. (T/F)
(d) The auditory nerve is purely for perceiving sound. (T/F)
(e) Malleus, incus and stapes are collectively called the ear ossicles. (T/F)
(f) Flavour and taste are one and the same thing. (T/F)
(g) Short-sightedness and hyperopia are one and the same thing. (T/F)
(h) The blind spot is called so because no image is formed on it. (T/F)

Identify the correct statement(s) regarding the endocrine system.

Which of the following involves the process of diffusion in?
A. The movement of minerals from the soil into root hair cells.
B. The movement of water into the cells of living things.
C. The movement of dissolved oxygen from the surrounding water into an amoeba.
D. The movement of carbon dioxide from the air into leaf cells.

The wings of birds and bats look alike. What type of relationship is this?

Which test can be used to diagnose conditions such as asthma,pulmonary fibrosis (scarring of the lung tissue), and COPD (chronic obstructive pulmonary disease)?

Lamrack's theory includes which of the following points.

Wilting occurs when there is

Sometimes hormones are secreted from other organs which already have a primary function. Examples of such organs are,

Question 46
Fill in the blanks
(a) Cork cells possess ___ on their walls that makes it impervious to gases and water.
(b) ___ have tubular cells with perforated walls and are living in nature.
(c) Bone possesses a hard matrix composed of ___ and ___.

What is the pathogenesis of AIDS virus? [5 MARKS]

Morula differs from the blastula in the

In a plant cell, ___ allows substances in a solution to pass through without hindrance.

Which of the following statements is correct about receptors?

Why do plant roots grow away from sunlight?

Which of the following statements would justify that lysosomes are formed out of Golgi apparatus?

Match the hormones with the event they control in menstrual cycle

The pituitary gland is located at a specific part of the brain called _____.

The 2 variables which measure the efficiency of the cardiac cycle and the heart’s pumping activity are _______.

During which phase do the daughter cells get one chromosome of each homologous pair?

The unicellular organism which reproduces by budding is :

(a) Spirogyra
(b) Hydra
(c) Planaria
(d) Yeast

Match the stages of mitosis listed in column I with the important events pertaining to respective stages given under column II; and choose the answer which gives the correct combination of alphabets of the two columns:

$\begin{array}{cccc}& ColumnIStagesofmitosis& & ColumnIIImportantevents\\ A& \text{Interphase}& p& \text{Equatorial plate formation}\\ B& \text{Metaphase}& q& \text{Daughter chromosomes move to opposite poles}\\ C& \text{Anaphase}& r& \text{Centrioles divde}\\ & & s& \text{Synthetic phase}\end{array}$

How is the movement of water and sucrose different in plants

Statement 1: The cell wall is made up of cellulose.

Statement 2: It gives shape and rigidity to the cell.

For food, shelter and to find a mate to reproduce we need___ .

Which of the following layers of the uterus breaks off during menstruation?

Dim light: rod cells :: Bright light: ______

Reabsorption of useful substances from the glomerular filtrate occurs in

State whether the following statement is true or false :

The sex of an infant is not a case of inheritance of characteristics.

Name the intermediate and end products of breakdown of glucose in aerobic respiration.

The sexually transmitted disease which is caused by bacteria is
(a) malaria
(d) diarrhoea
(c) gonorrhoea
(d) AIDS

Which of the following constitute a food chain?