Inhalation is the process where oxygen is taking in to the respiratory system thru the nasal passageways and to the tiny alveolar sacs of the lungs. This process also expands the lungs and the diaphragm heightens or elevates upward.
The counterpart of inhalation is exhalation, where the carbon dioxide is taken out of the lungs in opposite of the oxygen passageways.
This two exchange is called the gas exchange or respiration which happens in the respiratory system responsible for enabling and providing oxygen throughout the body.
I found the exercise on the internet and bellow are the options:
"A. Seed cones contain ovules.
B. Germinated seeds are haploid.
C. A pollen tube is used to prevent the fertilization process.
<span>D. Pollen grains undergo meiosis to form egg cells."
The correct answer is D.
There are no seed cones, but pollen cones, where the ovules can be found. Germinated seeds are diploid, not haploid. The pollen tube role is to promote the fertilization process by leading the sperm to the egg, once the sperm in this type of plants do not have flagella and therefore no movement.
The correct answer is D because pollen grains are really the diploid germinative cells that </span><span>produce sperm cells.</span>
By studying mitosis scientists have learned how cells divide. Mitosis is the process by which cells reproduce, and without it cancer cells wouldn't be able to form tumors and spread throughout the body
Answer:
organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere.
Explanation:
Answer:
C. Cnidarian tentacles have stinging cells, but Bryozoan tentacles are covered with cilia.
Explanation:
Cnidaria and Bryozoan, both teh phylum are classified under kingdom Animalia that contain aquatic animals found both in freshwater and marine environments.
They both use tentacles for feeding but there is diffference between there tentacles and feeding process.
Cnidarians tentacles are conist of stinging cells in the tips, which are called cnidocytes and a coiled thread-like stinger, called nematocyst. These stinging cells and nematocyst helps to capture and subdue prey. They feed over plankton or animals larger then them.
Bryozoan tentacles are covered with cilia and form an "O" or "U" shaped fold called lophophore, which helps to feed by sweeping the surrounding water. They generally feed on plankton, nudibranchs (sea slugs) and sea spiders.
Hence, the correct option is C.
