In plants, the structures that play roles similar to the arteries and veins of animals are the
xylem and phloem
root hair and xylem
lenticels and phloem
roots and stems
Correct answer is A
No explanation has been provided for this answer.
The first terrestrial vertebrates evolved from
pisces
reptilia
amphibia
mammalian
Correct answer is A
The earliest vertebrates resembled hagfish and lived more than 500 million years ago. As other classes of fish appeared, they evolved traits such as a complete vertebral column, jaws, and a bony endoskeleton. Amphibians were the first tetrapod vertebrates as well as the first vertebrates to live on land.
Alternation of asexual and sexual modes of reproduction is found in?
blue-green algae
euglena
fern
maize
Correct answer is C
Ferns use both sexual and asexual reproduction methods.
In a cell, the genes are carried by?
nuclear membranes
chromatin threads
lysosomes
mitochondria
Correct answer is B
No explanation has been provided for this answer.
A characteristic exhibited by all living organisms is?
sexual reproduction
aerobic respiration
the ability to move from one place to another
the ability to remove unwanted substances
Correct answer is D
No explanation has been provided for this answer.