Questions

In flowering plants one sperm nucleus fertilizes the egg and the other sperm nucleus fuses with two other nuclei found within the ovule, thus forming triploid endosperm.

Hence, double fertilization is unique to flowering plants.

Oil from Gnetum spp a gymnosperm belonging to the family Gnetaceae is used to relieve the effects of rheumatism

The lianas and shrubs of Gnetum are found in the rain forests of the western ghats.

Shankha Ghosh, the outstanding Bengali writer, commentator and academician, has been chosen for the prestigious 52nd version of the Jnanpith Award (2016) by the Government of India (GoI) for his lovely phrase and tries different things with different beautiful structures check his significance as an imaginative ability.The Jnanpith Award is presented every year to a literary figure for their outstanding contribution in literature. The honor conveys a reference, prize cash of Rs. 12 lakh and a bronze imitation of Goddess Saraswati.He turned into the sixth Bengali creator to win India's most astounding artistic honor after Mahasweta Devi, Tarashankar Bandopadhyay, Ashapurna Devi, Subhash Mukhopadhyay and Bishnu Dey.

Let the two digits be x & y

From given data in the question, we get

x + y = 3(x - y)

x + y = 3x - 3y

=> 2x = 4y

x/y = 2/1

For having the 2:1, numbers satisfying are

12, 21, 24, 42, 36, 63, 48, 84

From this 36 is eleminated because it is a perfect square and no others are prime or perfect squares.

Hence, there exists 7 such 2-digit numbers => 12, 21, 24, 42, 63, 48, 84.