1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
balu736 [363]
3 years ago
8

Which of the following statements is true about external and internal fertilization?

Biology
2 answers:
Mice21 [21]3 years ago
6 0

Answer: A. external fertilization doesn’t require sexual intercourse.

Explanation:

Fertilization is a process of fusion of the male and female gametes of the organisms so as to produce zygote a precursor of new life. In living beings the fertilization is of two types named as external and internal fertilization.

In external fertilization the fusion of the gametes of opposite sex takes place outside the body of the organism. It is used by some aquatic organisms like fishes they lay their eggs in water which are fused by the male sperms also released in water. In external fertilization no direct sexual intercourse takes place.

In internal fertilization the fusion of the male and female gamete takes place inside the body of the female mate. This occurs due to direct sexual intercourse between the male and female partners.

NeX [460]3 years ago
4 0

Answer:

A is correct external fertilisation doesn't require sexual intercourse

You might be interested in
How much sperm does a man produce each day
Nadya [2.5K]

Answer:

about 525 billion sperm cells

Explanation:

In fact, the average male will produce roughly 525 billion sperm cells over a lifetime and shed at least one billion of them per month. A healthy adult male can release between 40 million and 1.2 billion sperm cells in a single ejaculation.

5 0
2 years ago
Read 2 more answers
A woman in the third trimester of her first pregnancy expresses fear about the birth canal being wide enough for her to push the
NeX [460]
Relaxin

<span>Relaxin, secreted by the corpus luteum of the ovary as well as the placenta, is responsible for helping to inhibit uterine activity and to soften the cervix and the collagen in joints. Softening of the cervix allows for dilatation at birth; softening of collagen allows for laxness in the lower spine and so helps enlarge the birth canal. The effect of estrogen is to cause breast and uterine enlargement. Progesterone has a major role in maintaining the endometrium, inhibiting uterine contractility, and aiding in the development of the breasts for lactation. Human placental lactogen (hPL), also known as human chorionic somatomammotropin, serves as an antagonist to insulin, making insulin less effective, thereby allowing more glucose to become available for fetal growth.</span>
4 0
3 years ago
Which is a physical hazard?BacteriaMoldCleanerFilet bone
Readme [11.4K]

There are three types of hazards

- physical such as knives, filet bone

- chemical such as cleaner, chlorine (chemical substances)

- biological such as bacteria, mold (live organisms)

Because filet bone is a physical hazard the answer is D (filet bone)

6 0
11 months ago
All of the following are formal taxonomic categories except:_____.
Elenna [48]
C, population, is not a formal taxonomic category
3 0
1 year ago
Which is a difference between the Paleozoic and Mesozoic era?
solniwko [45]

Answer:

the animals

Explanation:

the difference between animal life in the Mesozoic Era and the early Cenozoic Era is that in the Mesozoic Era the reptiles were dominate and in the Cenozoic Era the mammals were dominate.

7 0
3 years ago
Other questions:
  • Explain what is meant by the term essential amino acids
    11·1 answer
  • he concentration of a sugar is high inside a cell and slightly lower outside the cell. What is most likely to occur if the sugar
    12·2 answers
  • Seed plants do not have swimming sperm instead they have this
    8·1 answer
  • Fungal infections are often difficult to treat because fungi
    10·2 answers
  • When an atom loses or gains electrons, it becomes a_____
    8·2 answers
  • Through the process of meiosis, sex cells are produced that are what?
    10·1 answer
  • When can an acquired mutation be passed from parent to offspring
    13·1 answer
  • What does a ribosome do.
    6·2 answers
  • I don’t have anything to ask !
    10·2 answers
  • Can you help me 20 points!!!
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!