Vertebrates, annelids, and arthropods all have significant segmentation in their
ID: 213534 • Letter: V
Question
Vertebrates, annelids, and arthropods all have significant segmentation in their bodies.
a) true
b) false
When presented with the fossilized remains of a dinosaur, what species concept would you use to determine whether you had a new species or not?
a) Biological species concept
b) Ecological species concept
c) Phylogenetic species concept
d) Genetic cluster species concept
e) Morphological species concept
The thermoacidophile Sulfolobus acidocaldarius lacks peptidoglycan, but still possesses a cell wall. What is likely to be true of this species?: 1. It is a bacterium. 2. It is an archaean. 3. The optimal pH of its enzymes will lie above pH 7. 4. The optimal pH of its enzymes will lie below pH 7. 5. It could inhabit certain hydrothermal springs. 6. It could inhabit alkaline hot springs.
a) 1, 3, and 6
b) 2, 4, and 6
c) 1, 3, and 5
d) 2, 4, and 5
e) 1, 4, and 5
Chondricthyes feature the following features except...
a) Protostome development
b) jaws
c) Skull to protect brain
d) bilateral symmetry
Explanation / Answer
1- a) True- All of them (vertebrates, annelids and arthropods) are segmented
Annelids have significant segmentation throughtout the body. Each segmet has muscle and bristle called as setae which helps them move.
Vertebrates have significant segmented vertebral column
Arthropods also possess a segmented body.
2)- C: Phylogenetic species concept
The basic idea of phylogenetic species concept is that species must be diagnosable and is used when isolation among organisms could not be observed. It identifies species based on unique characteristics to create systemization of evolution of new features.
3) D: i.e point 2, 4 and 5 are correct for it
It is an archaean. And it is a thermoacidiphile which confirms that
Thermo- inhabit at high temperature
Acidophile- optimal pH for its enzymes is acidic (below 7.5) and it can inhabit in high temperatures (alkaline hot springs
4) a: They have all the features except protostome development as they are deuterostomes.
Chondricthyes consiste of cartilaginous fishes. Chondrichthyan fishes includes a skull, jaws with teeth, a vertebral column (backbone)
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