The statements that correctly describes the function of each lichen part is that algae provide food, bacteria provide nitrogen, and fungi provide the structure. Lichen is a symbiosis between different organisms; that is fungi, an algae, and cyanobacteria. The dominant part is the fungus which gives the lichen most of its characteristics such as thallus shape and the fruiting bodies.
Answer:
B. Changing muscle length.
Explanation:
Isometric exercises are stationary/static forms of exercise. They include contractions of the muscle without the movement of the affected joints. There is no change in length of the muscles since the joints are static.
This exercise is best fitted for strength maintenance. Examples include squatting,prayer and yoga pose etc.
Explanation:
Spermatogenesis and oogenesis are both forms of gametogenesis, in which a diploid gamete cell, sperm, and eggs respectively produces haploid cells through meiosis.
- Oogenesis takes place in the outermost layers of ovaries, it starts with a germ cell called oogonium, this cell will go under mitosis to increase in number, it will finish this division in a developing follicle with a secondary oocyte that will complete the meiosis if fertilized.
- In spermatogenesis meiosis begins with a primary spermatocyte, after this meiotic division a haploid cell is produced, this will be the secondary spermatocyte, this will result in four sperm from each spermatocyte that goes through meiosis, they are in an inactive state until gonadotropic hormones activate them during adolescence.
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I added images for both processes!
Because the different environments permit some organisms to thrive, while others cannot. ... Similarly, a fish (extremely suited to its aquatic environment) can't survive out of water. A characteristic which allows growth in one environment will not necessarily allow growth in another.