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lesantik [10]
2 years ago
13

How many megaspores and how many sperm cells are involved in a double fertilization event?.

Biology
1 answer:
KIM [24]2 years ago
7 0

Explanation:

In the megasporan- gium of each ovule, the megasporocyte divides by meiosis, producing four megaspores. One survives and forms a female gametophyte. Fertilization: In nucleus of developing endosperm-- Double fertilization occurs. One sperm fertilizes the egg, forming a zygote.

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In fermentation the molecules of NADH are________while the organic molecules are _________.
LuckyWell [14K]

Answer:

The correct answer is option C- "oxidize, reduce".

Explanation:

Fermentation is a process analogous to cellular respiration and, just like the latter, it involves oxidization and reduction of molecules with the final purpose of producing energy. During the process of fermentation nicotinamide adenine dinucleotide + hydrogen (NADH) is oxidized to its original form of NAD with a plus charge; while other organic molecules such as piruvate are reduced.

3 0
3 years ago
Which of the following relationships is an example of a mutualism
puteri [66]
Mutualism- in which two different organisms interact, and each organism benefits each other (think "positive, positive"; or " +,+ "). An example would be Oxpeckers and zebras or rhinos - In this relationship, the oxpecker (a bird) lives on the zebra or rhino, sustaining itself by eating all of the bugs and parasites on the animal. The bird benefits by having a readily available source of food. The zebra or rhino benefits from having the bugs removed. Also, when there is a danger to the zebra or the rhino, the oxpecker flies high and makes much noise in order to alert nearby animals to the impending danger (i.e. a predator). Read more at http://examples.yourdictionary.com/mutualism-examples.html#3LtWEwmHBJ53KFbb.99
5 0
4 years ago
Read 2 more answers
NEED ANSWER ASAP
Paul [167]

Answer:

the answer would be A

Explanation:

Animal cells are oval and egg shaped so we can cancel out c and d

A is the correct answer because we can see green dots within the structure. Chloroplasts contain a green pigment called chlorophyll. This green pigment makes the chloroplast and the structure green (as we can see in the picture). Photosynthesis occurs in the chloroplasts, and it is where the plant gets its glucose from

Hope this helps!

8 0
3 years ago
How are scientific theories formed?
almond37 [142]
Through a series of tests and data
3 0
3 years ago
What are the functions of plasma membrane??<br><br><br><br>btw hii​
krek1111 [17]

Answer:

Hi

Explanation:

It separates the content of cell from their external environment.

It controls the entry and exit of materials in nd out of cell

6 0
2 years ago
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