ok this is a class thing so i need an answer ..... i would really appreciate if i could have a true answer........... this could bring me down
2007-01-08 11:33:08 · 7 answers · asked by me 1 in Science & Mathematics ➔ Zoology
zoo plankton millions of tiny animals that travel on the oceans currents
2007-01-08 12:01:19 · answer #1 · answered by eva diane 4 · 0⤊ 1⤋
Class Insecta has about 925,000 described species with estimates ranging from 2 million to fifty million species, yet to be discovered, thought to exist. Insects were around roughly 500 million years ago feeding on the first primitive land plants and each other. More specialized insects hit the scene about 350 million years ago.
Sponges are an older class of animals but not as diverse. Called Porifera, I believe. Actually that's a phylum, not a class, I see three classes but there is about 5,000 modern species of sponges and they go back nearly a billion years!!
2007-01-08 12:18:44 · answer #2 · answered by Professor Armitage 7 · 1⤊ 0⤋
Well, I think sponges are among the oldest animals. Pretty sure they predate insects. Only, they're not all in the same class and they're certainly not more numerous than insects.
2007-01-08 11:48:41 · answer #3 · answered by Musmanno 2 · 0⤊ 0⤋
Sponges are the first (oldest) of the "animals". Insects are the most diverse.
2007-01-08 12:01:24 · answer #4 · answered by dtbrantner 4 · 0⤊ 0⤋
So amazed that I found this topic already answered! Its like you've read my mind!
2016-08-23 14:43:19 · answer #5 · answered by Anonymous · 0⤊ 0⤋
Insects, I believe. Invertebrates in general.
If we don't consider microscopic beings.
2007-01-08 11:37:14 · answer #6 · answered by PragmaticAlien 5 · 0⤊ 1⤋
This might be feasible
2016-08-08 23:28:55 · answer #7 · answered by Anonymous · 0⤊ 0⤋