List of top Questions asked in Maharashtra Class XII

Identify ‘A’ in the given graph of population growth.

Complete the following box with reference to symptoms of mineral deficiency:
Abscission: Pre-mature fall of flowers, fruits and leaves
______: Appearance of green and non-green patches on leaves
Give an example of plant having both kidney and dumb-bell shaped guard cells in stomata.
Define the terms:
a. Gross Primary Productivity
b. Net Primary Productivity
Draw a neat diagram of thyroid gland and label thyroid follicle, follicular cells, and blood capillaries.
Give reason – ABA is also known as antitranspirant.
Explain the role of chlorophyllase enzyme in banana.
Calcium and Phosphate ions are balanced between blood and other tissues by ______.
Identify the INCORRECT statement.
Which of the following is a hormone releasing contraceptive?
Which disease is caused by HPV?
Which device is used to clean both dust and gases from polluted air?
Mention the name of sterile animal produced by intergeneric hybridisation.
Give the name of first transgenic plant.
Histones are rich in _______.
How many mitotic divisions take place during the formation of a female gametophyte from a functional megaspore?
Which of the following is the only gaseous plant growth regulator?
The pH of nutrient medium for plant tissue culture is in the range of _______.
Rivet Popper Hypothesis is an analogy to explain the significance of _______.
Which of the following group shows ZW-ZZ type of sex determination?
In Hamburger’s phenomenon, _______.
Prove that: \( \int_0^{2a} f(x) \, dx = \int_0^a f(x) \, dx + \int_0^a f(2a - x) \, dx \).
Find the length of the perpendicular drawn from the point \( P(3, 2, 1) \) to the line \( \mathbf{r} = (7\hat{i} + 7\hat{j} + 6\hat{k}) + \lambda (-2\hat{i} + 2\hat{j} + 3\hat{k}) \).
If \( y = \cos (m \cos^{-1} x) \), then show that \( (1 - x^2) \frac{d^2 y{dx^2} - x \frac{dy}{dx} + m^2 y = 0 \).
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Verify Lagrange’s mean value theorem for the function \( f(x) = x + 4 \) on the interval [0, 5].
Evaluate: \( \int \frac{2x^2 - 3}{(x^2 - 5)(x + 4) \, dx \).
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