A gastrovascular cavity is a digestive sac with only a single opening. An alimentary canal has two openings (a mouth and anus) between its digestive tubes unlike the gastrovascular cavity in which food is ingested and eliminated through the same opening.
Here is your Answer.
Positive: You get to see different animals, see all kinds of habitats, learn new facts about all the animals and see them maybe in action!
Negative: They might be sleeping, In a cage or fence so they can't get out, restricted.
I believe that the Loose uncoiled chromosomes are actually DNA in the form of Chromatin. Genes are made up of chromosomes and direct the formation of a specific characteristic DNA and genes are the same thing. Chromosomes contain 100 to 100 of genes in one very long strand of DNA. The DNA is coiled around proteins that are called histones. The DNA seems to form a bigger part of the chromosome than the histone and since the DNA consists of genes, then half of the chromosomes is genes.
Answer:
D. analogous.
Explanation:
Analogous organs can be defined as organs, which show similar functions, but do not having common origins. Organisms that possess analogous organs do not share common ancestor as their organs are derived from different origins.
Examples of analogous organs include wings of bats, birds, and birds which are evolved independently, but share common function (flying).
Thus, the correct answer is option (D).
