Answer in one word:
1. A fully submerged hydrophyte.
2. A bird with webbed - feet.
3. A mineral present in bones and teeth.
4. Small bones of spine.
5. Joint at the elbow is the?
Answers
Answer:
1. In order to survive, a hydrophyte, also known as an aquatic macrophyte, must either be completely submerged in water, or in some cases be allowed to float on the surface of the water. Aquatic plants can usually be categorized into 4 main type: floating plants, deep water plants, marginal plants and oxygenating plants.
2. Webbed feet are ideal for birds that swim, on the water's surface or under. In fact, they're such a nifty adaptation that they evolved, independently, in several bird groups. Ducks and geese have them, as do gulls, cormorants, loons, pelicans, penguins and puffins.
3. Calcium is a mineral found in many foods. Almost all calcium is stored in bones and teeth to help make and keep them strong.
4. The bottom of the spine is called the sacrum. It is made up of several vertebral bodies usually fused together as one. The remaining small bones or ossicles below the sacrum are also fused together and called the tailbone or coccyx.
5. The elbow joint is a synovial joint found in the upper limb between the arm and the forearm. It is the point of articulation of three bones: the humerus of the arm and the radius and the ulna of the forearm. The elbow joint is classified structurally as a synovial joint.