17) Read the following statements and find out the incorrect statement about dicotyledonous seed
1) Above the hilum is a small pore called the micropyle
2) Within the seed coat is the embryo, consisting of an embryonal axis and two cotyledons
3) In castor the endosperm formed as a food storing tissue is pre-fertilisation structure
4) At the two ends of embryonal axis are present the radical and plumule
18) ( A) : Epiphyllous condition is found in the flowers of lily
( R ) : In lily, stamens are attached to the perianth.
1) If both A & R are true and R is the correct explanation of the A
2) If both A & R are true but R is not the correct explanation of the A
3) If A is true , but R is false
4) If both A & R are false
19) Well developed pith is found in
1) Monocot root & monocot stem 2) Monocot stem & dicot root
3) Monocot root & dicot stem 4) Dicot root and dicot stem
20) Match the Columns I and II and choose the correct combination from the options given
Column I Column II
a) Tendon
1) Loose connective tissue
b) Ligament
2) Dense regular connective tissue
c) Areolar tissue
3) Dense irregular connective tissue
d) Adipose tissue
4) Specialised connective tissue
1) a-2 b-1 c-4 d-3
2) a-1 b-4 c-3 d-2
3) a-2 b-2 c-3 d-1
4) a-2 b-2 c-1 d-1
21) Bacterial cells have a chemically complex cell envelope. The cell envelope consists of a tightly bound three layer structure , i.e the
1) Outermost cell wall followed by the plasma membrance & then the glycocalyx
2) Outermost glycocalyx followed by plasma membrane and the cell wall
3) Outermost cell wall followed by the glycocalyxand then the plasma membrane
4) Outermost glycocalyx followed by the cell wall and then the plasma membrane
22) Which one is the wrong statement regarding cell organelles?
1) Lysosomes are double-membraned vesicles budded off from Golgi bodies and contain digestive enzymes
2) Endoplasmic reticulum consists of a network of membranous tubules and helps in transport, synthesis and secretion
3) Leucoplasts are bound by two membranes , lack pigments but contain their own DNA and protein synthesizing machinery.
4) Spherosomes are single membrane bound and are associated with synthesis and storage of lipids
23) Match the Columns:
Column I Column II
a) Endoplasmic reticulum i. Cellular respiration
b) Free ribosome ii. Osmoregulation and excretion
c) Mitochondrion iii. Synthesis of lipids
d) Contractile vacuole iv.Synthesis of non-secretory proteins
1) a-I,b-ii c-iv d-iii 2) a-iii, b-iv , c-I, d-ii
3) a-iii, b-ii, c-I, d-iv 4) a-ii, b-I, c-iii,d-iv
24) (A) : Chloroplast, mitochondria and peroxisomes are not considered as a part of the endomembrane system
(R): Function of chloroplast , mitochon dria and peroxisomes are not coordinated with ER, golgi complex , lysosomes and vacuoles
1) If both A & R are true and R is the correct explanation of the A
2) If both A & R are true but R is not the correct explanation of the A
3) If A is true, but R is false
4) If both A & R are false
25) Read the following statements and find out the incorrect statement
1) Palmitic acid is saturated while arachidonic acid is unsaturated fatty acid
2) Monoglycerides, diglycerides and triglycerides are lipids having both glycerol and fatty acids
3) Saturated fatty acids have one or more C=C double bonds while unsaturated fatty acids are with-out double bonds
4) Fat and oils are differentiated on the basis of melting point
26) Find the incorrect matching
1) Essential oils – Lemon grass oil 2) Terpenoids-Monoterpenes, diterpenes
3) Polymeric substances – Rubber, gums, nucleotides
4) Pigments – Carotenoids, anthocyanins
27) Glycosidic bond is formed between
1) Carbon and oxygen atoms of two adjacent monosaccharides
2) Carbon and hydrogen atoms of two adjacent monosaccharides
3) Hydrogen and oxygen atoms of two adjacent monosaccharides
4) Two carbon atoms of two adjacent monosaccharides
28) Select the correct option
I II
a) Synapsis 1) Anaphase-II
b) Synthesis of RNA and protein 2) Zygotene
c) Action of enzyme recombinase 3) G2 – phase
d) Centromeres do not separate but
chromatids move towards opposite poles 4) Anaphase -I
5) Pachyte
1) a-1,b-2,c-5,d-4 2) a-2,b-3,c-4,d-5
3) a-2,b-1,c-3,d-4 4) a-2,b-3,c-5,d-4
29) The key features of metaphase are
1) Spindle fibres attach to kinetochores of chromosomes
2) Chromosomes are moved to spindle equator and get aligned along metaphase plate
3) Splitting of centromere
4) Both 1 &2
30) Meiosis is evolutionary significant because it result in
1) Genetically similar daughters
2) Four daughter cells
3) Eggs and sperms
4) Recombinations
31) Once water is absorbed by the root hairs, it can move deeper intoroot layers by two distinct pathways
1) One is xylem & second in phloem
2) One is active & second is passive
3) One is apoplast & second is symplast
4) One is trachid & second is vessel
32) Nitrification is done intwo steps. In first step NH3 is converted into nitrite and in second step nitrite is converted into nitrate by
1) Nitrosomonas &Nitrococcus resp ectively
2) Nitrosomonas &Nitrobacter respe ctively
3) Nitrococcus & Nitrobacter respec tively
4) Both 2 & 3
33) The evidence that during photosynthesis oxygen comes from water
1) Photosynthetic bacteria employ H2S & CO2 to form carbohydrates , water and sulphur
2) Isolated illuminated chloroplasts release oxygen if provided with potassium ferrocyanide
3) Isotopic 180 provided as H2 180 appears as 1802 liberated in photosynthesis
4) All the above
34) CAM plants do not show photorespiration due to
1) Keeping stomata closed during day time
2) Using PEP carboxylase
3) Fixing CO2 into organic acid in night and releasing Co2 during day
4)Performing Calvin cycle at night
35) How many molecules of NADH are produced when four molecules of phosphoglyceraldehde are converted into four molecules of pyruvate?
1) 2 2) 6 3) 8 4) 4
(To Be Continued)
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