Answer:
Diploid
Explanation:
Almost all the animals have a diploid-dominant life cycle. In the early stage of embryo development, the germ cells are made in gonads which undergoes mitosis and meiosis to make more germ cells and haploid gametes respectively. So the resulting zygote formed by fertilization having 46 chromosomes, 23 from each human sperm and eggs. That the reason why the resulting zygote have the characteristic number of chromosomes of that particular species.
Answer:
According to the picture, during a solar eclipse the moon must be in position A, interposed between the sun and the earth.
Explanation:
A solar eclipse is due to the interposition of the moon between the sun and the earth, which produces that the solar rays do not reach certain points of the planet.
The lunar phase that is shown during a solar eclipse is the new moon phase, because the satellite does not show the side illuminated by the sun. At this point, the moon must be close to the solar orbital plane for the phenomenon to occur.
The answer is D. lose apical dominance and grow lateral branches
Apical meristem is a meristem tissue found at the branch tips. When it is active, tree grows in height and the lateral branches will not be as dominant. Imagine conifers and their branches. However, when apical meristem is removed, that apical dominance will be lost, and the lateral branches will become more dominant, so the tree will look more branchy.
Answer:
b. pseudocoelom
Explanation:
A pseudocoelom is a false body cavity of some invertebrates which occupies the space localized between the mesoderm and the endoderm of the gut. This false cavity is found in nematodes.
Arthropods exhibit:
1- Bilateral symmetry because both opposite sides of the body are similar,
2- they are protostomes because the blastopore becomes the mouth during embryonic development,
3- they have true tissues because tissues are formed by groups of cells which share a common function, and finally,
4-arthropods are triploblastic because they are formed by three germ embryonic layers (endoderm, mesoderm and ectoderm).
Prokaryotes don’t have organelles (which are the cell’s ‘organs’ that carry out the cells functions).
Plant cells and animal cells are eukaryotes because they have organelles.
Plant cells are kind of stiff because of their structure. They have a cell wall, which is really tough. Also, plant cells perform photosynthesis, using an organelle called a chloroplast. Finally, plant cells have a large vacuole that stores the cells waste.
Animal cells, unlike plant cells, lack a cell wall. That means they’re free to wiggle if they wanted to. Animal cells have lysosomes that assist in reproduction.
