Which of the following is not immortal?

Why is reproduction essential for organisms? Describe its types.

The given figure shows gametes. Select the correct option.

Which type of reproduction is found in Hydra?

Which of the following statements is not correct about sexual reproduction?
$(I)$ Gametes fuse to form the zygote.
$(II)$ It is an elaborate,complex,and fast process compared to asexual reproduction.
$(III)$ Offspring are not identical to the parents.

In a practical test, a student has to identify the organisms in which syngamy does not occur. In those organisms, the female gamete undergoes development to form new organisms without fertilization. This phenomenon is called "$X$". Identify the organisms and the phenomenon "$X$".