Q: What do a group of cells that work together form? Read this paragraph and choose the correct option from the provided answers: Cells are grouped together to carry out specific functions. A group of cells that work together form a tissue . Your body has four main types of tissues, as do the bodies of other animals. These tissues make up all structures and contents of your body. An example of each tissue type is pictured in the Figure below . Choices: - molecule - organelle - organ - tissue A:
tissue

(Question)
Q: Hydrocarbons are made up of carbon and what else? Read this paragraph and choose the correct option from the provided answers: Hydrocarbons are compounds that contain only carbon and hydrogen. The carbon atoms in hydrocarbons may share single, double, or triple covalent bonds. Unsaturated hydrocarbons contain at least one double or triple bond between carbon atoms. They are classified on the basis of their bonds as alkenes, aromatic hydrocarbons, or alkynes. Choices: - silicon - nitrogen - helium - hydrogen A:
(Answer)
hydrogen

Ques: Q: What parts of comets make them easy to see? Read this paragraph and choose the correct option from the provided answers: Gases in the coma and tail of a comet reflect light from the Sun. Comets are very hard to see except when they have comas and tails. That is why they appear only when they are near the Sun. They disappear again as they move back to the outer solar system. Choices: - arcs and tails - novas and tails - craters and tails - comas and tails A:
Ans: comas and tails

(Q).
Q: Some sea anemones establish what kind of relationship with hermit crabs by attaching to the crab's shell? Read this paragraph and choose the correct option from the provided answers: The mouth of a sea anemone is surrounded by tentacles that bear cnidocytes. The slit-like mouth opening and pharynx are lined by a groove called a siphonophore. The pharynx is the muscular part of the digestive system that serves to ingest as well as egest food, and may extend for up to two-thirds the length of the body before opening into the gastrovascular cavity. This cavity is divided into several chambers by longitudinal septa called mesenteries. Each mesentery consists of one ectodermal and one endodermal cell layer with the mesoglea sandwiched in between. Mesenteries do not divide the gastrovascular cavity completely, and the smaller cavities coalesce at the pharyngeal opening. The adaptive benefit of the mesenteries appears to be an increase in surface area for absorption of nutrients and gas exchange. Sea anemones feed on small fish and shrimp, usually by immobilizing their prey using the cnidocytes. Some sea anemones establish a mutualistic relationship with hermit crabs by attaching to the crab's shell. In this relationship, the anemone gets food particles from prey caught by the crab, and the crab is protected from the predators by the stinging cells of the anemone. Anemone fish, or clownfish, are able to live in the anemone since they are immune to the toxins contained within the nematocysts. Anthozoans remain polypoid throughout their lives and can reproduce asexually by budding or fragmentation, or sexually by producing gametes. Both gametes are produced by the polyp, which can fuse to give rise to a free-swimming planula larva. The larva settles on a suitable substratum and develops into a sessile polyp. Choices: - pathogenic - parasitic - predatory - mutualistic A:
(A).
mutualistic

Ques:Q: Which germ layers are essential for animal embryos to grow and develop into a body? Read this paragraph and choose the correct option from the provided answers: The three germ layers are the endoderm, the ectoderm, and the mesoderm. Cells in each germ layer differentiate into tissues and embryonic organs. The ectoderm gives rise to the nervous system and the epidermis, among other tissues. The mesoderm gives rise to the muscle cells and connective tissue in the body. The endoderm gives rise to the gut and many internal organs. Organogenesis Gastrulation leads to the formation of the three germ layers that give rise during further development to the different organs in the animal body. This process is called organogenesis. Organs develop from the germ layers through the process of differentiation. During differentiation, the embryonic stem cells express specific sets of genes that will determine their ultimate cell type. For example, some cells in the ectoderm will express the genes specific to skin cells. As a result, these cells will take on the shape and characteristics of epidermal cells. The process of differentiation is regulated by location-specific chemical signals from the cell's embryonic environment that sets in play a cascade of events that regulates gene expression. Choices: - histone and melatonin - keratinocytes , ectoderm , mesoderm - cytoplasm and chloroplasm - endoderm, ectoderm, mesoderm A:

Ans:endoderm, ectoderm, mesoderm

Question: Q: Many plants generate root pressure during which phase? Read this paragraph and choose the correct option from the provided answers: Choices: - flowering season - developing season - end of life cycle - growing season A:
Answer:
growing season