Could the number of eggs or young ones produced by an oviparous and viviparous mother be equal? Why?

Animals who give birth to young one are (A) Oviparous (B) Viviparous (C) Ovoviviparous (D) None of the above

Which of the following statement are true for viviparous animals ? (I) Zygote develop into a young one inside the body of female parent. (II) Young one are delivered out of the body of the female parent. (III) Proper embryonic care and protection is given to young one. (IV) The chances of the survival of young ones is lesser in viviparous organism. (A) I is true (B) I, II are true (C) I, II and III are true (D) I, II and IV are true

The minimum number of vectors of equal magnitude required to produce a zero resultant is :

Two dice, one red and one yellow, are thrown at the same time. Write down all the possible outcomes. What is the probability that the sum of the two numbers appearing on the top of the dice is (1) 8 (ii) 13 (iii) less than or equal to 12?

A light source, which emits two wavelength lamda_(1)=400nm and lamda_(2)=600nm , is used in a Young's double slit experiment. If recorded fringe width for lamda_(1) and lamda_(2) are beta_(1) and beta_(2) and the number of fringes for them within a distance y on one side of the central maximum are m_(1) and m_(2) respectively, then

If you could use any source of energy for heating your food, which one would you use and why ?

A die has six faces numbered from 1 to 6. It is rolled and the number on the top face is noted. When this is treated as a random trial. a) What are the possible outcomes ? b)Are they equally likely? Why? c) Find the probability of a composite number turning up on the top face.