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S_A_V [24]
3 years ago
14

How many percent of angiosperm pollen grains are shed at two Celled stage​

Biology
2 answers:
Schach [20]3 years ago
5 0

Answer:

60%

Explanation:

In over 60 % of angiosperms, pollen grains are shed at this 2-celled stage tube cell orvegetative cell generative cell.

galben [10]3 years ago
3 0
The answer should be 60%
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A scientist discovers that a compound inhibits the action of an enzyme. What experiment can he perform to determine whether the
Anna35 [415]

Answer

Raise the concentrations of the reactants to see if activity can be restored through reactant competition with the inhibitor for binding at the active site.

Explanation:

Competitive inhibitors have a structure similar to that of the normal substrate. Like the substrate, the inhibitor binds temporarily to the enzyme's active site but is not converted to products. This way, the inhibitor competes with the normal substrate for binding onto the enzyme's active site.

Non-competitive inhibitors do not compete with the normal substrate for the active site. They bind at a site different from the active site in a way that alters the structure of the active site. The result is that the normal substrate fails to bind to the active site.

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4 years ago
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How does meiosis create haploid gametes
arsen [322]

Meiosis creates haploid gametes when<u> </u><u>nuclei re-form</u><u>, and new </u><u>nuclear membranes </u><u>develop.</u>

<u />

<u />

Meiosis is a form of the mobile department in sexually reproducing organisms that reduces the number of chromosomes in gametes (the intercourse cells, or egg and sperm).

Meiosis is responsible for the formation of sex cells or gametes which are chargeable for sexual reproduction. It turns on the genetic information for the improvement of intercourse cells and deactivates the sporophytic information.

Seeing that cellular division takes place twice at some point of meiosis, one beginning cellular can produce <u>4 gametes</u> (eggs or sperm). In every spherical division, cells go through 4 ranges: prophase, metaphase, anaphase, and telophase.

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Learn more about Meiosis here:-brainly.com/question/8253366

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4 0
2 years ago
Bt crops, including potatoes and cotton, are genetically engineered using laboratory techniques. Which of the following utilizes
algol13

Answer: Genetically engineered crops have an advantageous gene from another organism inserted into their genome.

3 0
4 years ago
Science has nothing to do with
maria [59]

Answer:

anything

Explanation:

please report me

5 0
3 years ago
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What kingdom, phylum, class, order, family, genus, and species each insect is:
bazaltina [42]

Answer:

African Honeybee:

Phylum: Arthropoda

Species: Apis mellifera

Genus: Apis

Kingdom: Animalia

Order: Hymenoptera

Class: Insecta

Tribe: Apini

Grasshopper:

Phylum: Arthropoda

Informal group: Acridomorpha; Dirsh, 1966

Kingdom: Animalia

Class: Insecta

Order: Orthoptera

Black Widow Spider:

Scientific name: Latrodectus

Length: Southern black widow: 1.5 in.

Class: Arachnida

Order: Spider

Phylum: Arthropoda

Mosquito:

Scientific name: Culicidae

Order: Diptera

Class: Insecta

Speed: 1 – 1.5 mph

Clutch size: 100 – 200

Yellow Jacket:

Phylum: Arthropoda

Family: Vespidae

Genus: Vespula or Dolichovespula

Order: Hymenoptera

Class: Insecta

Kingdom: Animalia

I hope this helped you

8 0
3 years ago
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