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Free_Kalibri [48]
3 years ago
6

Explain why the cotyledon is not needed once the bean plant matures?

Biology
1 answer:
mixas84 [53]3 years ago
4 0
Because cotyledons are meant to store reserve food for the developing seedling before it develops its own green leaves for photosynthesis
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A cell with 80 chromosomes undergoes meiosis. How many chromosomes are found in the daughter cells? How many daughter cells are
qwelly [4]

Answer:

Four daughter cells are produced each with 40 chromosomes. The daughter cells would exhibit genetic variations and would not be genetically identical to each other.

Explanation:

Meiosis is a cell division that forms four daughter cells from one parent cell as two sequential division meiosis I and meiosis II do not include any DNA replication between them. Crossing over during prophase-I of meiosis-I includes the exchange of genetic segments and occurs between the homologous chromosomes. It produces new gene combinations in the daughter cells which were otherwise not present in the parent cell.

Since there is no DNA replication between meiosis I and meiosis II, the daughter cells have half the number of the chromosomes compared to the parent cell. This occurs as homologous chromosomes move towards the opposite pole during anaphase I.

Therefore, a parent cell with 80 chromosomes will make a total of 4 daughter cells by meiosis. Each daughter cell would have 40 chromosomes. These daughter cells would have some new gene combinations and would be genetically dissimilar among themselves.  

5 0
3 years ago
PLEASE HELP I WILL GIVE BRAINLIEST, 5 STARS, A LIKE, AND A FOLLOW PLEASE ANSWER CORRECTLY​
Mama L [17]

Answer:

-The three main types of muscle include skeletal, smooth and cardiac.

- Skeletal muscle – the specialised tissue that is attached to bones and allows movement. ...

Smooth muscle – located in various internal structures including the digestive tract, uterus and blood vessels such as arteries. ...

Cardiac muscle – the muscle specific to the heart.

-Skeletal muscles are attached to the skeleton by tough connective tissues called tendons

-Many skeletal muscles are attached to the ends of bones that meet at a joint. The muscles span the joint and connect the bones. When the muscles contract, they pull on the bones, causing them to move.

-They are lightweight yet strong and hard, and serve multiple functions.

-The joints help attach bones to one another to provide flexibility & allow the muscles to help give the bones a way to move.

- The nervous system helps all the parts of the body to communicate with each other.

-Your nervous system uses specialized cells called neurons to send signals, or messages, all over your body.

-homeostasis?

Receptors in muscles provide the brain with information about body position and movement. The brain controls the contraction of skeletal muscle. The nervous system regulates the speed at which food moves through the digestive tract.

ive listed the answers in order. hope this helps :) i will appercite if you give me brainliest.

Explanation:

5 0
2 years ago
Are parents with homologous pairs diploid or haploid?
Elden [556K]

Answer:

diploid

Explanation:

So humans have two homologous chromosome sets in each cell, meaning humans are diploid organisms.

6 0
3 years ago
Read 2 more answers
Which is one factor of rock types that affects the rate of weathering?
Mekhanik [1.2K]
Porosity

Porosity refers to the space inside the rock that is taken up by pore space.
6 0
3 years ago
when a prairie dog spots a predator, it responds by giving an alarm call, but only when close relatives are near. this is an exa
inn [45]

when a prairie dog spots a predator, it responds by giving an alarm call, but only when close relatives are near. this is an example of vocalization.

<h3>What do you mean by predator ?</h3>

The interaction between prey and a predator, where the energy flow occur called as predation and the organism feed on other organism called as predator and the food means the other organism is called as prey.  

Predators can be carnivores and omnivores like Lions, tigers, sharks, and snakes, all are predators, it can fall prey to other large animals E.g. a snake is a predator to a mouse, but prey to a hawk.

Carnivorous predators directly kill and eat their prey like large animals such as the lion and tiger, they have their own mode of feeding.

Herbivore are plant eating animals like cows, buffaloes, goats, sheep, and deer; parasites are also under the category of predators which is a host dependent and live, get nutrients from host's body for survival and reproduction.

Learn more about predator, here:

brainly.com/question/12410124

#SPJ4

3 0
1 year ago
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