Out of the characteristics listed below, select the ones that are common to MARINE mammals ONLY. Please help.
Warm-blooded
Blubber layer
Streamlined bodies
Breathe air
Bear live young
Nurse young with milk
Stay underwater longer
Store extra oxygen in muscles
2007-12-22 10:45:35 · 2 answers · asked by elektrapink09 2 in Science & Mathematics ➔ Biology
This question is worded strangely but I'll explain my reasoning...
Warm-blooded - no, this is common to all mammals.
Blubber layer - yes. Most mammals have fat and although they are very similar, they are slightly different.
Streamlined bodies - yes. Some animals like the cheetah have streamlined bodies but overall it is not a very common characteristic of mammals.
Breathe air - no, obviously common amongst mammals
Bear live young - no. This is extremely common in mammals. I think the only two species that don't are the echidna and the platypus, both of which lay eggs.
Nurse young with milk - no. This is one of the biggest defining characteristics of all mammals. Even the name mammal comes from the latin word for breast (and think mammary gland).
Stay underwater longer - yes. They can stay underwater much longer than most mammals. Hence why they are "marine" mammals.
Store extra oxygen in muscles - no. All mammals have myoglobin in their muscles that stores and transports oxygen. It's a characteristic of muscle tissue in general.
In short: blubber layer, streamlined bodies, and stay underwater longer. The other characteristics are common among all mammals, not just marine mammals.
2007-12-22 11:17:12 · answer #1 · answered by alice 2 · 0⤊ 0⤋
Blubber layer
Stay underwater longer ( longer than what is not not clear)
Store extra oxygen in muscles (?)
Streamlined bodies
2007-12-22 18:52:30 · answer #2 · answered by Labsci 7 · 0⤊ 0⤋