The three<span> basic bacterial shapes are coccus (spherical), bacillus (rod-shaped), and spiral (twisted), however pleomorphic bacteria can assume several shapes. Cocci may be oval, elongated, or flattened on one side. Cocci may remain attached after cell division.</span>
Answer:
The animals present body structure is due to evolution. It is seen in each part including the structure of the heart. The vertebrate heart becomes complex from a simpler form.
Invertebrates, the heart of fishes is two-chambered having one auricle and one ventricle. The deoxygenated blood gets purified in the gills. They are aquatic and no lungs for breathing. The hearts pump a mixture of oxygenated and deoxygenated blood to the body.
The amphibians and reptiles have 3 chambered heart as they lead terrestrial mode of life. The gills modified into the lungs. The left auricle receives pure blood and the right auricle receives deoxygenated blood. The blood purified in the lungs and in the ventricle, both types of blood get a mix. The ventricle pumps the mixed-blood throughout the body.
In the case of birds and mammal, the heart is 4 chambered and the oxygenated and deoxygenated blood are separated. These two are higher vertebrates. No mix of pure and impure blood, the body receives only the oxygenated blood.
This shows to construct the phylogenetic tree of vertebrates - the fishes should be in the bottom, and above it amphibians, reptiles, then, mammals and birds on the top branch of the tree. As the chambers and structure of the hearts modified one after another.
Answer:
consumers:
- fox
- buzzard
- rabbit
- mouse
- titmouse
- grasshopper
- butterfly
- snake
- frog
- dragonfly
- greenfly
- ladybird
producers:
- plantain
- berries
- grasshopper
- rabbit
- mouse
- titmouse
- snake
- frog
- butterfly
- ladybird
- greenfly
- dragonfly
Explanation:
I might be super wrong lol take this with a grain of salt eheh
Answer:
Both muscular and skeletal system work together to make the organisms move from one place to another.
Explanation:
Skeletal system consist of bones which provides shape and supports to the body. It also provides protection to the delicate organs such as brain, lungs and heart etc. Bones are attached with one another with the help of muscles. All the vital organs are also made from muscles. These muscles helps the body to move, run, exercise and other movements and helps in the performance of your body.
