In the egg of a bird,the shell and shell membranes are:

  • A
    Permeable to $O_2$ and $CO_2$
  • B
    Permeable to water only
  • C
    Permeable to air only
  • D
    Non-permeable

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Similar Questions

Assertion : Mammalian ova produces hyaluronidase.
Reason : The eggs of mammal are microlecithal and telolecithal.

Identify $X, Y$ and $Z$ from the figure:
$Z-Y-X$

Match the columns.
Column $I$ Column $II$
$(a)$ Corpus luteum $(1)$ Initially in abdominal cavity then in scrotum
$(b)$ Testis $(2)$ At the anterior part of scrotum in male
$(c)$ Myometrium $(3)$ Graafian follicle
$(d)$ Penis $(4)$ Uterus

Select the correct option from the following.

Name the functions of the following:
$(a)$ Corpus luteum
$(b)$ Endometrium
$(c)$ Acrosome
$(d)$ Sperm tail
$(e)$ Fimbriae

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