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Fudgin [204]
3 years ago
9

BEST ANSWER GETS BRAINLIEST!!!!

Biology
1 answer:
Katarina [22]3 years ago
4 0

Answer:B or C

Explanation:

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The cycads, a mostly tropical phylum of gymnosperms, evolved about 300 million years ago and were dominant forms during the age
Andrei [34K]

Answer:The Cycad tree is the sporophyte.They have flagellated sperm.

Explanation:

During pollination, the contents of the megaspore divide to form many–celled gamateophyte called the endosperm and archegonium. There is a micropyle opening with a sticky fluid, which traps the wind-borne male gametophyte (microspores) which,at this time is made up of prothallus cell;an antheridial cell and a large tube cell. The trapped microspore is sucked into the archegonia chamber. Antherizoids are released, but only one penetrates each oospore and fuses with the female nucleus. The zygote is formed in the ovule and the later develops into seed.The diploid seed germinates into a new sporophyte plant and the life cycle begins again. Examples of cycad include Cycas circinalis ,Cycas celebrical and Cycas revoluta

8 0
3 years ago
OMG PLEASE HELP QUICK!!!
Anton [14]

Answer:

Maybe ores

Explanation:

8 0
3 years ago
Read 2 more answers
A volcano erupts and creates a new island. This is an example of what type of succession?
yulyashka [42]
The answer is Primary!
3 0
3 years ago
Read 2 more answers
What is the average airspeed velocity of an unladen swallow
AleksAgata [21]

Answer:

10 meters/second.

Explanation:

Unladen swallow consists of two species are <em>Hirundo domicella </em>and the <em>Hirundo spilodera</em>.

The average speed of unladen swallow comes out to be 10 meters/second. The maximum speed can go upto 13-14 meters/second. The speed of unladen swallow can be calculated by the formula given by Graham K. Taylor. According to graham the speed of unladen swallow is 3 times of the product of frequency and amplitude. ( v= 3fA, v is velocity, f is frequency and A is amplitude).

5 0
3 years ago
What experiments are being performed in<br> regards to evolution?
tresset_1 [31]

Answer:

I think laboratory experiments

Explanation:

3 0
3 years ago
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