An example of arboreal animal is?
squirrels
duck
pig
rat
Correct answer is A
Arboreal animals are those animals that spend most of their life on trees. They feed, travel, play, and sleep on trees.
1. Koalas · 2. Black spider monkeys · 3. Siamang Gibbon · 4. Three-toed Sloth · 5. squirrel · 6. Rough green snake · 7. Veiled Chameleons · 8. Common brown lemurs.
The internal structure of a leaf that has larger air space is?
palisade mesophyll
epidermis
spongy mesophyll
vascular bundles
Correct answer is C
The spongy mesophyll's function is to allow for the interchange of gases (CO 2) that are needed for photosynthesis.
A universal recipient of blood belongs to blood group?
O
AB
B
A
Correct answer is B
Blood donors with type O- (O negative) red blood cells are referred to as universal donors and their red blood cells can be given to any other blood type.
Type AB-positive blood is called the "universal recipient" type because a person who has it can receive blood of any type.
Lack of nucleus is a feature in?
osteocyte
neuron
erythrocyte
leucocyte
Correct answer is C
Red blood cells are microscopic and have the shape of a flat disk or doughnut, which is round with an indentation in the center, but it isn't hollow.
Red blood cells don't have a nucleus like white blood cells, allowing them to change shape and move throughout your body easier.
The development of big muscles by a wrestler is an example of?
acquired characteristics
inherited characteristics
mutation
atrophication
Correct answer is A
Acquired traits include things such as calluses on fingers, larger muscle size from exercise or from avoiding predators.