STD 11 - 17. Locomotion and movement — NEET STD 11 Science — Question

Assertion: In females, oxytocin responsible for child birth and milk ejection from the mammary gland.
Reason: Oxytocin act on the smooth muscles and stimulates their contraction.

Identify the wrong statements for poriferans from given statements.
(i) Metameric segmentation present in poriferans
(ii) Notochord is a mesodermally derived in poriferans.
(iii) Poriferans are primitive multicellular and have cellular level of organisation.
(iv) Digestion is intracellular in poriferans
(v) Poriferans are hermaphrodite and fertilisation is internal.

Which set of enzymes is found in the acrosome of mammalian spermatozoa?

The eye of octopus and eye of cat show different patterns of structure, yet they perform similar function. This is an example of

Tapeworms obtain their food from

Zoological name of common Indian Krait is

In the buccal cavity of frog the internal nares are

Sliding filament theory can be best explained as