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LekaFEV [45]
3 years ago
6

Please help! i need this due by 12 pm eastern time

Biology
2 answers:
DochEvi [55]3 years ago
8 0

Answer:

the first one i think is d

Mnenie [13.5K]3 years ago
6 0
For the second one maybe D.
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Measure of an organisms’s ability to survive and produce offspring relative to other members of a population
marishachu [46]

Fitness.

Explanation:

Fitness is a relative thing.A genotypes' fitness include its ability to survive,find a mate,produce off spring.

5 0
3 years ago
Multicellular gametophytes are the product of spores from ____​
jolli1 [7]

Answer:

In bryophytes, the sporophyte is minute and dependent on the relatively prominent and nutritionally independent gametophyte for resources. The moss gametophyte looks like a miniature herb, with tiny leaf-like photosynthetic organs. The gametophyte generation begins as a dormant spore, which germinates under appropriate conditions to produce filamentous and branching protonemal tissues. These form multicellular bud-like structures, each of which develops into a leafy shoot. The mature gametophytes produce male and female sexual organs, the antheridia and archegonia, respectively. The gametophyte is often sexually distinct, and plants are either male or female.

Each antheridium has an outer layer that encloses and protects thousands of motile sperm, which swim through available external water layer to the egg. Fertilization at the base of the cylindrical archegonium produces a diploid zygote which develops into an unbranched sporophyte. The sporophyte consists of a thin stalk attached to the gametophyte, and a capsule that encloses the sporophytic meiotic cells.

In recent years, the mosses Physcomitrella patens and Funaria hygrometrica have emerged as attractive model systems for studying gene function in non-vascular plants because of the relative ease of molecular manipulation by homologous recombination. Mutants affecting gametophyte development have been isolated and their analysis should provide insights into the molecular basis of gametophyte development in mosses.

Explanation:

7 0
3 years ago
The amount of life that can be supported in a particular ecosystem is limited by which of the following?
Elina [12.6K]

Answer:

the answer is all of them

Explanation:

5 0
3 years ago
If an rh-negative female conceives a child with an rh-positive male, what is the chance their fetus will be rh-positive?.
kaheart [24]

There is 50% chance of the child to be Rh-positive.

<h3>What is Rh factor?</h3>

Some red blood cells have a protein called a Rh factor. Person with this protein are called Rh-positive while those who don't have are called Rh-negative.

<h3>What will be the blood factor of the child?</h3>

When a Rh negative mother and Rh positive father have a child, the child has 50% chance of being Rh-positive. The child may receive the Rh factor from its father.

<h3>What is Rh incompatibility?</h3>

Your Rh factor blood type often doesn't pose a problem. Being Rh-negative during pregnancy, however, can cause issues if your unborn child is Rh-positive. When your blood and that of your child combine, your body will begin to produce antibodies that could harm your child's red blood cells. Your baby can experience other issues, such anemia, as a result of this.

Learn more about Rh factor here:

brainly.com/question/28189070

#SPJ4

7 0
2 years ago
How might marine scientists combat eutrophication?
Kay [80]

Eutrophication is the overgrowth of algae in lakes and ponds

that is usually caused by the introduction of different chemicals

into the water from fertilizer run-off. Some ways to combat this

are to increase the flow of moving water, prevent contamination

from fertilizer, and reduce pollution of our lakes and streams.

5 0
3 years ago
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