Answer:
A. The fern transitioned from gametophyte generation to sporophyte generation.
Explanation:
Ferns undergo an ALTERNATION of GENERATIONS in their reproductive life cycle. That is, they alternate between an incospicuous gametophytic stage and a dominant sporophytic stage. The sporophyte produces haploid spores, which germinates into the gametophyte plant called PROTHALLUS.
The gametophyte produces gametes (male and female) which fuse together to form the diploid zygote, which eventually develops into the SPOROPHYTE plant via mitosis. In this question, the brown dots from the underside of a fern's leaves that Maria collected are the spores.
When she places them in a pot, the spores germinated into gametophyte stage, then formed sporophyte, which is the small leaves she noticed growing from the pot. From this, it can be observed that the fern is transitioning from GAMETOPHYTE generation to SPOROPHYTE generation.
Answer: Most sedimentary rocks come from the ground, grand canyons, and even valconoes.
Explanation: Sedimentary rocks are rock that have been squished together by other rocks. One sedimentary rock can be made up of 10 or more rocks!
Answer:
4 min to 6 min
Explanation:
Most people have a four-to-six minute supply of oxygen in the body at any one time.
However, a group of people called the Bajau have divers who can stay underwater for as long as 13 min at depths of around 60 m.
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19 = Wave Length
20 = Compression
21 = Rare Fraction
22 = Displacement
23 = Crest
24 = Wave Length
25 = Trough
Answer:
The rocks and debris would never accrete into a planet.
Explanation:
Gravity is an attraction force and dependents on the mass of the objects but in the absence of the force, the rocks and debris would not come together to form a clump. So, we can say that in the absence of gravity, the rock and debris would never accrete into a planet. So, we can say that in the absence of gravity, the rock and debris would never accrete into a planet.
