Answer:
<u>Luteinizing hormone </u>(LH) stimulates Leydig cells to secrete testosterone
<u>Follicle stimulating hormone (FSH)</u> stimulates Sertoli cells to secrete protein and other molecules required for spermatogenesis
Explanation:
Under the influence of gonadotropin-releasing hormone, the anterior pituitary releases luteinizing hormone (LH) and follicle-stimulating hormone (FSH). In males, LH stimulates interstitial cells of testes (Leydig cell) to secrete the hormone testosterone. FSH acts indirectly to stimulate spermatogenesis by causing the release of androgen-binding protein (ABP) from the Sertoli cells. The function of ABP is to maintain the higher concentrations of testosterone to stimulate the final steps of spermatogenesis in the seminiferous tubules.
Answer:
Option D, Gastric Juices
Explanation:
The second line of defense is a non specific defense mechanism in which no specific individual is targeted but all invaders are killed in general way. Some common mode of second line of defense are - Phagocytic cells (white blood cells), inflammatory responses, macrophage system etc. The second line of defense comes into action when the invader has surpassed the first line of defense which include either physical barrier like skin, mucous membrane, hair, cilia etc. or chemical barriers like gastric juices, saliva, Hyaluronic acid etc.
Hence, gastric juice does not belong to second line of defense.
Thus, option D is correct.
I believe it’s a. conserve water. the waxy coating doesn’t let as much water evaporate.
The phylogenetic tree of organisms within the animal kingdom include characteristics below:
- Ancestral protists
- Tissues
- body symmetry
- Germ layers
- Body cavity
- Porifera
- Platyhelminthes
- Nematoda
- Annelida
- Mollusca
- Arthropoa
- Echinodermata
- Chordata
<h3>What is phylogenetic tree?</h3>
A phylogenetic tree simply refers to a branching diagram or a tree showing the evolutionary relationships among various biological species of both plants and animals based on their similarities and differences; either genetically or physically
Generally, animals; be it vertebrates or invertebrates has the few characteristics below:
- All animals are multicellular organisms
- Animals are also heterotrophic, meaning; they depend on other organisms for food or they obtain their energy by consuming energy-releasing food substances.
- Animals typically reproduce sexually.
- All animals are also made up of cells that do not have cell walls.
In conclusion, the phylogenetic tree of organisms within the animal kingdom include all characteristics mentioned above
Learn more about animal diversity:
brainly.com/question/15784565
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The pancreas detects that the blood sugar level is higher and releases insulin. It tells the liver to store glucose in the blood as glycogen.
This regulates the blood sugar levels
