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In the following question, a statement of assertion is followed by a statement of reason. Mark the correct choice as

Assertion: Conversion of 1,3 biphosphoglycerate (BPGA) to 3-phospho-glyceric acid (PGA) is an energy-yielding step.

Reason: This energy is trapped in the form of ATP.

Community ecology is the

Identify the correct sequence of developmental process of a cell

1. Expansion

2. Plasmatic growth

3. Maturation

4. Meristematic

5. Mature cell

6. Differentiation

The composition of glomerular filtrate and urine is noit same . Comment.

Red tide is caused by

Acid rains are caused by excessive atmospheric pollution due to

Question 15:

A primary root grows from 5 cm to 19 cm in a week. Calculate the growth rate and relative growth rate over the period.

What is meant by pleomorphic ?

A vascular element "A" is dead, cylindrical, lignified and conduct substances due to a negative pressure created in it due to transpiration pull. A vascular element "B" is living, cylindrical, non lignified, enucleated and conduct substances due to a positive pressure created in it. A & B conducting elements respectively are

In comparison to blood plasma, percentage of glucose in glomerular filtrate is

The movement of a substance across the membrane independent of another substance is called

Which of the following is/are (an) example(s) of passive immunity?

Match the following columns related to phases of growth

$\begin{array}{cc}\text{Column-I}& \text{Column-II}\\ \text{A.Meristematic phase}& \text{1.Cells attain maximum size}\\ \text{B.Elongation phase}& \text{2.Constant state of cell division}\\ \text{C.Maturation phase}& \text{3.Cells acquire protoplasm}\end{array}$

Discuss the consequences of:

a) Global warming

b) Ozone depletion

Which of the following cell organelle helps in packaging of proteins?

Describe the internal structure of a dorsiventral leaf with the help of labelled diagrams.

Question 29

Select the odd one out



(a) The movement of water across a semi-permeable membrane is affected by the amount of substances dissolved in it.

(b) Membranes are made of organic molecules like proteins and lipids

(c) Molecules soluble in organic solvents can easily pass through the membrane.

(d) Plasma membranes contain chitin sugar in plants

A dioecious plant has

Name the correct substrates for the following enzymes.

(a) Trypsin

(b) Amylase

(c) Pepsin

(d) Lipase

Function of mast cell

The pollen tube usually enters the embryo sac

Match the classes of enzymes listed in column I with the subdivisions given in column II and select the right answer showing the correct combination of alphabets of the two columns.

$\begin{array}{cccc}& \text{Column I}& & \text{Column II}\\ & \text{Class of enzymens}& & \text{Subdivisions}\\ A& \text{Oxidoreductases}& e& \text{Decarboxylases}\\ B& \text{Transferases}& f& \text{Acetyl COA carboxylase}\\ C& \text{Hydrolases}& g& \text{Dehydrogenases}\\ D& \text{Ligases}& h& \text{Kinases}\\ & & i& \text{Proteases}\end{array}$

Identify A,B $\&$ C in ETS of respiration

Which kind of classification is now commonly accepted and used to categorise plants?

In the developmental history of mammalian heart, it is observed that it passes through a two-chambered fish like heart, three-chambered frog-like heart and finally four-chambered stage. To which hypothesis can this above cited statement be approximated?

Antibiotics are ineffective against ___.

Describe the functions of various parts of a plant.

Label the parts of typical vertebra in order from 1-5 according to the figure below.

Identify the factors affecting respiration in plants.