Observe the figure and answer the following:


What kind of mitotic divisions occur in the nuclei before the formation of embryo sac?

India has a history of religious and cultural traditions to emphasise protection of nature. In related with this such sacred groves are found in _________

Arrange the following geological periods in latest to oldest duration of existence.
(A) Triassic
(B) Carboniferous
(C) Cretaceous
(D) Permian
Choose the correct answer from the options given below:

Read the given paragraph and answer the given question :
Parasitism has evolved in many taxonomic groups from plants to higher vertebrates. Many parasites have evolved to be host specific in such a way that both host and the parasite tend to co-evolve. In accordance with their life styles, parasite evolve special adaptations and complex life cycle. Identify the statements which are not correct regarding host–parasite relationship:
(A) Host and parasite co-evolve.
(B) Parasite develops a main nervous system to survive.
(C) If host rejects parasite, parasite evolves counter-mechanisms to neutralize host defenses.
(D) If host rejects parasite, parasite succeeds by shifting to another host.
Choose the correct answer from the options given below:

Arrange the following steps of gel electrophoresis in correct sequence
A. Staining with ethidium bromide.
B. Loading of DNA fragments on agarose gel.
C. Separation of DNA by moving them, towards anode under electric field.
D. Visualising by exposure to UV radiations.
Choose the correct answer from the options given below:

Read the passage carefully and give the answers to the question :
India was amongst the first countries in the world to initiate action plans and programmes at a national level to attain total reproductive health as a social goal.
These programmes called 'family planning' were initiated in 1951 and were periodically assessed over the past decades. Improved programmes covering wider reproduction-related areas are currently in operation. Creating awareness among the people about various reproduction-related aspects and providing facilities and support for building up a reproductively healthy society are the major tasks under these programmes.
'Saheli' - an oral contraceptive pill, also known as the 'Once a week' pill, was developed by :

Which of the following is not categorized under narrowly utilitarian benefit for conserving biodiversity?

Let \(A=\{1,2,3\}\). Then, the number of relations containing \((1,2)\) and \((1,3)\), which are reflexive and symmetric but not transitive, is:

If \(\hat{i}, \hat{j}\) and \(\hat{k}\) are unit vectors along co-ordinates axes \(OX , OY\) and OZ respectively, then which of the following is/are true?
(A) \(\hat{i} \times \hat{i}=\overrightarrow{0}\)
(B) \(\hat{i} \times \hat{k}=\hat{j}\)
(C) \(i \cdot i=1\)
(D) \(\hat{ i } \cdot \hat{ j }=0\)
Choose the correct answer from the options given below:

\(\int e^x \sec x(1+\tan x) d x\) equals:

An unpolarised beam of light of intensity \(I_0\) falls on a single polaroid. The intensity of the emergent beam is

Resolving power of a telescope can be increased by increasing:

Let \(*: R \times R \rightarrow R\) be defined by \(a * b=a+2 b\). Then \(*\) is: