Question

In sponges, internal fertilization occurs when (1 point)
A. the sperm is deposited directly into the female sponge.
B. the sperm is taken in from the surrounding water.
C. the female releases eggs into the water to be fertilized.
D. the female takes up sperm packets that were deposited by the male.

Answer 1

the sperms are discharged in water and the ciliated cells of the coelenterate collects them and performs the internal feritlization.
so, B

Answer 2

Yea I figured it out thanks(:

Answer 3

1. Parthenogenesis is a method of reproduction in which (1 point)
(0 pts) an egg develops after being fertilized by a sperm.
(0 pts) the parent animal divides into two new animals.
(0 pts) the offspring develops as an outgrowth of the parent’s body wall.
(1 pt) an egg develops without being fertilized by a sperm.
0 /1 point
2. In sponges, internal fertilization occurs when (1 point)
(0 pts) the sperm is deposited directly into the female sponge.
(1 pt) the sperm is taken in from the surrounding water.
(0 pts) the female releases eggs into the water to be fertilized.
(0 pts) the female takes up sperm packets that were deposited by the male.
1 /1 point
3. External fertilization in chordates (1 point)
(0 pts) must take place on land.
(1 pt) must take place in water.
(0 pts) can take place in water or on land.
(0 pts) does not occur.
1 /1 point
4. Synchronizing gamete release during external fertilization increases the chance that (1 point)
(0 pts) offspring will mature.
(0 pts) females can internalize sperm.
(1 pt) eggs will be fertilized.
(0 pts) sperm will survive.
1 /1 point
5. One important characteristic shared by all embryos of land vertebrates and aquatic vertebrates is that
(1 point)
(0 pts) they all develop in amniotic eggs.
(0 pts) they all develop fully before being born.
(1 pt) they all develop in a watery environment.
(0 pts) they all can survive independently after birth.
0 /1 point