Fern spore germinates into prothallus.
Explanation:
Ferns are members of phylum pteridophyta, the vascular cryptogams.
These are first land plants which are known to have a distinct conducting system of xylem and phloem.
They reproduce by forming spores that germinates into a heart shaped gametophyte.
The gametophyte of the fern is called prothallus.
The heart shaped gametophyte has root like structure called rhizoids.
These rhizoids anchor the gametophyte to the substratum.
Answer:
C, there is not enough light
Explanation:
Let's look at the word "aphotic". It can be broken into two parts, "a" and "photic". "a" means "not" and "photic" means "light". So, together, they mean "not light". Even if we knew nothing about marine life, we could answer this!
Answer:chemical reaction
Explanation:Enzymes are biological molecules (typically proteins) that significantly speed up the rate of virtually all of the chemical reactions that take place within cells. They are vital for life and serve a wide range of important functions in the body, such as aiding in digestion and metabolism.
Answer:
A. ATP
Explanation:
The Cyclic electron flow in the chloroplast includes only PSI and does not produce NADPH and oxygen gas. The process produces the only ATP.
During cyclic electron flow, electrons are transferred from the P700 reaction center to the ferredoxin and back to the PSI via cytochrome b6f and plastocyanin.
Since the electrons are not passed to the NADP+, NADPH is not produced. The proton gradient generated during this electron transfer drives ATP synthesis.
