Question

Answer the following:
a) Fill in the blank and rewrite the complete sentence: Autotrophic organisms
have _______ type of cell structure.
b) Identify the odd one out and write the reason: Ulva, Funaria, Pinus, Pteris
c) Correlate and write in one sentence. Plants ________: Deer: Consumer
d) Identify the statement as true or false and write the reason.: Yeast reproduces
by cell division.
e) Define: Antibiotics

Answer 1

Answer:

Which of the following reason correctly justifies than "Fluorine (7yccocyoccp2pm) has

smaller atomic radius than lithivmggktifigium (152pm)

a) F and Li are in the same group Atomic size increases down the group

b) F and Li are in the same period atomic size increases across the

period due to increase in number of shells

c) F and Li are in the same group Atomic size decreases down the group

d) F and Li are in the same period and across the period atomic size radius decreases from knbmvndizhjrxkcll

to right

xoixl

lhcvpuv

kcfixi

lchcyp

lhcch

Answer 2

a) Chloroplasts

b) Pinus

Explanation: Among Ulva, Funaria, Pinus and Pteris, the odd one is Pinus. Ulva is an algae, Funaria is a Bryophyte, Pteris is a Pteridophyte and Pinus is a Gymnosperm. Algae, Bryophytes and Pteridophytes are Cryptogams, which do not produce seeds. Whereas, Gymnosperms are Phanerogams, which are seed producing plants.

c) Plants : Producers :: Deer : Consumer

Explanation: Plants are producers and they constitute the first trophic level in a food chain. Deers are Herbivores, and they are considered as primary consumers in a food chain.

d) True

Explanation: Reproduction is a process which results in the formation of new organism. In unicellular organisms, cell division results in the formation of new organism. As Yeast is a unicellular organism, cell division results in the formation of new organism/offspring. Hence, the given statement is true.

e) Antibiotics:

Antibiotics are the substances that are used to kill the invading bacteria. In the word antibiotic - 'anti' means "against" and 'bios' means "life". Some examples of antibiotics are "Penicillin", "Cephalosporins", etc...