Answer:
c. red, green and blue.
Explanation:
The three main colors, also known as the primary colors are Red, Green and Blue. The trichromatic theory believes that the human eye and receive light of three different wavelengths (which are red, green and blue) and is able to combine these three different wavelengths in order to see the entire visible spectrum that make up millions of different colors. As can be visualized by the attached picture below.
The right answer is D.
Spermaphytes, or seedlings, are the last to appear on earth. This group is divided into two sub-branches:
*The gymnosperms (Conifers) which are currently represented by about 600 living species. They are plants whose free eggs (not enclosed in an ovary unlike angiosperms) are fertilized directly by pollen. They are divided into: Cycads (Cycas, Zamia) and Ginkgoales (Ginkgo biloba).
*The angiosperms (vascular plants), plants most recently appeared on earth, know today their apogee. This group has more than 250,000 living species, herbaceous or arboreal and adapted to almost all the biotopes of our planet. These are typically the ones we call flowering plants. Among angiosperms, there is a distinction between monocotyledons and dicotyledons. The cotyledon is the first leaf (primordial or germinal leaf), constitutive of the seed, and which presents itself to germination. The seeds of monocotyledonous plants, therefore, comprise a single cotyledon; those of dicotyledons have two. (For information: conifers (or gymnosperms) have more, often ten to twelve).
Answer:
In many cases, cloning involves inserting the gene into a piece of circular DNA called a plasmid, which can be copied in bacteria. ... If two DNA molecules have matching ends, they can be joined by the enzyme DNA ligase. DNA ligase seals the gap between the molecules, forming a single piece of DNA.
1.Cells are the basic unit of structure and function in all living things.
2.New cells are produced by existing cells.
3.All living things are made of cells.