Description : How does the length of the history of life help to explain the evolutionary events of single-celled organisms to complex multicellular organisms like mammals?
Last Answer : Not sure
Description : How do single celled organisms exchange genetic material?
Last Answer : http://paleobiology.si.edu/geotime/main/foundation_life2.html does this help??
Description : In single celled organisms diffusion is sufficient to meet all their requirements of food, exchange of gases or removal of wastes but it is not in case of multicellular organisms. Explain the reason for this difference. -Biology
Last Answer : Unicellular organisms can absorb sufficient oxygen because of its complete contact with the atmosphere, but in multicellular organisms the rate of absorption and diffusion becomes very less because all ... of oxygen to sustain life processes which cannot be fulfilled by the process of diffusion.
Description : All multi-celled organisms have 2,000 cells?
Last Answer : FALSE
Description : single - celled eukaryotes are included in
Last Answer : single - celled eukaryotes are included in A. Portista B. fungi C. Archaea D. Monera
Description : Select the correct statement out of (a-d) (a) single celled spirulina can produce large quantities of food rich in protein, minerals and vitamins. (b)
Last Answer : Select the correct statement out of (a-d) (a) single celled spirulina can produce large quantities of food rich in ... d C. b,c and d D. a and b
Description : What is the difference between a single celled creature and a multi-celled creature?
Last Answer : Need answer
Description : Are arachnids single or multi celled?
Last Answer : Is a arachnids a single or multi celled
Description : In what ways if any does a single celled organism differ from its parent?
Last Answer : In what ways, if any, does a single-celled organism differ from its parents?
Description : What pathogen is a single celled microorganism?
Last Answer : What is the answer ?
Description : Are arachnids multi celled or single celled?
Description : Is a volvox multi celled or single celled?
Description : Are amoeba single celled or multi celled?
Description : Are night crawlers single-celled or multi-celled?
Last Answer : They are multi-cellular.
Description : Is an insect single celled?
Last Answer : No.
Description : What is Yeast that makes bread rise is a type of single celled?
Description : After the union of sperm and egg, the single-celled zygote develops into a multicellular organism with specialized cells by the processes of?
Last Answer : mitosis and diffrentiation
Description : The archesporium of ovule is (a) Single celled terminal (b) Single celled central (c) Single celled hypodermal (d) Single celled lateral Ans. (c) ..................... ... formed after one fertilization (3) Seed is formed before double fertilization (4) Fruit is produced after double fertilization
Last Answer : Ans. ((c))
Description : The biggest single-celled organism is – (1) Yeast (2) Acetabularia (3) Acetobacter (4) Amoeba
Last Answer : (4) Amoeba Explanation: Researchers, in October 2011, found "giant amoebas" (Xenophyophores) beneath the surface of the Pacific in the Mariana Trench. At more than four inches in length, they are the largest single-celled organism on Earth. They are found exclusively in the deep sea.
Description : Single-celled eukaryotes are included in (a) protista (b) fungi (c) archaea (d) monera.
Last Answer : (a) protista
Description : Which group includes single celled protozoa and algae? a. Bacteria b. Archaea c. Fungi d. Protista
Last Answer : d. Protista
Description : Single celled laticifers are called as
Last Answer : Single celled laticifers are called as – Non-articulated laticifer
Description : The biggest single-celled organism is (1) Yeast (2) Acetabularia (3) Acetobacter (4) Amoeba
Last Answer : Amoeba
Description : The Correct Statements with reference to single called organisms are (i) Complex substances are not broken down in to simpler substances. (ii) Simple diffusion is sufficient to meet the requirement of exchange of gases. (iii) Specialized ... b) (ii) and (iii) (c) (ii) and (iv) (d) (i) and (iv)
Last Answer : Answer: (c)
Description : Connecting link between protozoa and non-celled plants is :
Last Answer : Connecting link between protozoa and non-celled plants is : A. Paramecium B. Euglena C. Amoeba D. Trypanosoma
Description : Morula formed at the end of clearvage is …………… celled
Last Answer : Morula formed at the end of clearvage is …………… celled A. 14 B. 16 C. 18 D. 20
Description : Embryo at 16-celled stage is called
Last Answer : Embryo at 16-celled stage is called A. Morula B. Blastula C. Blastomere D. Gastrula.
Description : Scavanger cells of alveoli celled :-
Last Answer : Scavanger cells of alveoli celled :- A. Melanophage B. Monocytes `//` Macrophage C. Dust cell D. Microglial cell
Description : Are there some many celled algae?
Last Answer : Many but not all algae is multicellular.
Description : What are some examples and non-examples of multi celled?
Last Answer : somethings are single celled. but some cells are multi celled like humans.
Description : Which of these is a tiny, cylindrical, multi-celled carbon tube used for minimizing instruments used in space applications?
Last Answer : nanotube
Description : Identify the human developmental stage shown as well as the related right place of its occurrence in a normal pregnant woman and select the right option for the two, together. Developmental Site of ... tube (c) Blastocyst - Uterine wall (d) 8-celled morula - Starting point of Fallopian tube
Last Answer : (c) Blastocyst – Uterine wall
Description : Which one of the following statements is wrong? (a) When pollen is shed at two-celled stage, double fertilisation does not take place. (b) Vegetative cell is larger than generative cell. (c) Pollen grains in some plants remain viable for months. (d) Intine is made up of cellulose and pectin.
Last Answer : (a) When pollen is shed at two-celled stage, double fertilisation does not take place.
Description : Male gametophyte of angiosperms is shed at (a) four celled pollen grain (b) three celled pollen grain (c) microspore mother cell (d) anther.
Last Answer : b) three celled pollen grain
Description : Embryo sac of angiosperm is : a) 6-celled 8-nucleate b) 7-celled 8-nucleate c)8-celled 7- nucleate d)7-celled 7-nucleate
Last Answer : Ans: b) 7-celled 8-nucleate
Description : Which one of the following statements is wrong?a)Pollen grains in some plants remain viable for monthsb)Intine is made up of cellulose and pectinc)When pollen is shed at two-celled state, double fertilization does not take placed)Vegetative cell is larger than generative cell
Last Answer : c)When pollen is shed at two-celled state, double fertilization does not take place
Description : One-celled algae enclosed in minute two-part silic shells are called: a) dinoflagellates (pron: die-no-flaj-el-ates) b) coelenterates (pron: sell-en-ter-ates) c) annelids d) diatoms
Last Answer : ANSWER: D -- DIATOMS
Description : The study of homologous structures in mature organism provides evidence for the evolutionary relationships among certain groups of organisms. Which fi
Last Answer : The study of homologous structures in mature organism provides evidence for the evolutionary ... Biochemistry C. Geology D. Comparative anatomy
Description : What are two examples of types of body structures that provide evidence of a common ancestor among diverse organism's?
Description : Simple organisms like sponges and cnideria circulate_____from their surrounding through their body cavities.
Last Answer : Simple organisms like sponges and cnideria circulate_____from their surrounding through their body cavities. ... Blood C. Colourless plasma D. Water
Description : Organisms using simple food material acquired from inorganic sources in the form of carbon dioxide and water are called – (1) Autotrophs (2) Heterotrophs (3) Organotroph (4) Both (1) and (3)
Last Answer : a) Autotrophs Explanation: Autotroph means self-feeding in Greek or producer and is an organism that produces complex organic compounds such as carbohydrates, fats, and proteins from simple substances using energy from light.
Description : Organisms that practice heterotrophy are able to synthesize their own food from _____. a. light b. simple carbon sources c. carbon monoxide d. oxygen gas
Last Answer : b. simple carbon sources
Description : In 1953 S.L. Miller created primitive earth conditions in the labortory and gave experimental evidence for origin of first form of life from pre-exist
Last Answer : In 1953 S.L. Miller created primitive earth conditions in the labortory and gave experimental evidence ... atmosphere containing `CH_(4)NH_(3)` etc.
Description : 6. In 1953 S L Miller created primitive earth conditions in the laboratory and gave experimental evidence for origin of first form of life from pre existing non living organic molecules. The ... -reducing atmosphere. d) High temperature, volcanic storms, reducing atmosphere and contains NH3 and CH4
Last Answer : d) High temperature, volcanic storms, reducing atmosphere and contains NH3 and CH4
Description : $ Life on earth originated by interaction of the various chemical substances in the broth of the sea. ! The first organisms were, pherhaps the chemoau
Last Answer : $ Life on earth originated by interaction of the various chemical substances in the broth of the sea. ! The ... wrong D. If both As and R are wrong.
Description : Following are the two statements regarding the origin of life. (A) The earliest organisms that appeared on the earth were non-green and presumably anaerobes. (B) The first autotrophic organisms were the chemoautotrophs that ... ) is correct but (B) is false. (d) (B) is correct but (A) is false.
Last Answer : (a) Both (A) and (B) are correct.
Description : Following are the two statements regarding the origin of life : A.`" "` The earliest organisms that appeared on the earth were non-green and presumabl
Last Answer : Following are the two statements regarding the origin of life : A.`" "` The earliest organisms that appeared on ... D. Both (a) and (b) are false.
Description : Exobiology deals with the study of - (1) external characters of living organisms (2) life on the surface of the earth (3) life in the outer layers of atmosphere (4) life in other planets and space
Last Answer : (4) life in other planets and space Explanation: Exobiology is the branch of science that deals with the possibility and likely nature of life on other planets or in space. The primary ... processes leading to the origin evolution and distribution of life on Earth or elsewhere in the universe.
Description : Exobiology deals with the study of : (1) external characters of living organisms (2) life on the surface of the earth (3) life in the outer layers of atmosphere (4) life in other planets and space
Last Answer : life in other planets and space