Girdling Experiment was performed by?
TS EMCET-2022
BOTANY MODEL TEST
1. Which one of the following statement is not true regarding gel electrophoresis technique?
1) The presence of chromogenic substrate gives blue coloured DNA bands on the gel.
2) Bright orange coloured bands of DNA can be observed in the gel when exposed to UV light.
3) The process of extraction of separated DNA strands from gel is called elution.
4) The separated DNA fragments are stained by using ethidium bromide.
2. Given below are two statements :
Statement I :
Mendel studied seven pairs of contrasting traits in pea plants and proposed the Laws of Inheritance.
Statement II :
Seven characters examined by Mendel in his experiment on pea plants were seed shape and colour, flower
colour, pod shape and colour, flower position and stem height.
In the light of the above state ments, choose the correct answer from the options given below :
1) Statement I is correct but Statement II is incorrect
2) Statement I is incorrect but Statement II is correct
3) Both Statement I and Statement II are correct
4) Both Statement I and Statement II are incorrect
3. Which of the following is in correctly matched?
1) Porphyra – Floridian Starch
2) Volvox – Starch
3) Ectocarpus – Fucoxanthin
4) Ulothrix – Mannitol
4. XO type of sex determination can be found in :
1) Grasshoppers 2) Monkeys
3) Drosophila 4) Birds
5. The appearance of recombination nodules on homologous chro- mosomes during meiosis characterizes :
1) Sites at which crossing over occurs
2) Terminalization
3) Synaptonemal complex
4) Bivalent
6. Which of the following is not a method of ex situ conservation?
1) Micro propagation
2) Cryo preservation
3) In vitro fertilization
4) National Parks
7. Identify the incorrect statement related to Pollination :
1) Flowers produce foul odours to attract flies and beetles to get pollinated
2) Moths and butterflies are the most dominant pollinating age- nts among insects
3) Pollination by water is quite rare in flowering plants
4) Pollination by wind is more common amongst abiotic pollination
8. Given below are two statements :
Statement I : The primary CO2
acceptor in C4
plants is phosphoenolpyruvate and is found in the mesophyll cells.
Statement II :
Mesophyll cells of C4
plants lack RuBisCo enzyme. In the light of the above statements, choose the correct answer from the options given below:
1) Statement I is correct but Statement II is incorrect
2) Statement I is incorrect but Statement II is correct
3) Both Statement I and Statement II are correct
4) Both Statement I and Statement II are incorrect
9. In old trees the greater part of secondary xylem is dark brown and resistant to insect attack due to :
a) secretion of secondary metabolities and their deposition in the lumen of vessels.
b) deposition of organic compou- nds like tannins and resins in the central layers of stem.
c) deposition of suberin and aromatic substances in the outer layer of stem.
d) deposition of tannins, gum, resin and aromatic substances in the peripheral layers of stem.
e) presence of parenchyma cells, functionally active xylem elements and essential oils.
Choose the correct answer from the options given below:
1) (d) and (e) Only
2) (b) and (d) Only
3) (a) and (b) Only
4) (c) and (d) Only
10. Which one of the following produces nitrogen fixing nodules on the roots of Alnus?
1) Rhodospirillum
2) Beijerinckia
3) Rhizobium 4) Frankia
11. Given below are two statements:
Statement I: Decomposition is a process in which the detritus is degraded into simpler substances by microbes.
Statement II: Decomposition is faster if the detritus is rich in lignin and chitin.
In the light of the above statements, choose the correct answer from the options given below:
1) Statement I is correct but Statement II is incorrect
2) Statement I is incorrect but Statement II is correct
3) Both Statement I and Statement II are correct
4) Both Statement I and Statement II are incorrect
12. Habitat loss and fragmenta- tion, over exploitation, alien species invasion and co-extinction are causes for:
1) Biodiversity loss
2) Natality
3) Population explosion
4) Competition
13. Hydrocolloid carrageen is obtained from:
1) Rhodophyceae only
2) Phaeophyceae only
3) Chlorophyceae and Phaeophy- ceae
4) Phaeophyceae and Rhodophy- ceae
14. “Girdling Experiment” was performed by Plant Physiolog- ists to identify the plant tissue through which:
1) for both water and food transportation
2) osmosis is observed
3) water is transported
4) food is transported
15. The flowers are Zygomorphic in:
a) Mustard b) Gulmohar
c) Cassia d) Datura
e) Chilly
Choose the correct answer from the options given below:
1) (d), (e) Only
2) (c), (d), (e) Only
3) (a), (b), (c) Only
4) (b), (c) Only
16. Which one of the following is not true regarding the release of energy during ATP synthesis through chemiosmosis? It involves:
1) Movement of protons across the membrane to the stroma
2) Reduction of NADP to NAD PH2 on the stroma side of the membrane
3) Breakdown of proton gradient
4) Breakdown of electron gradient
17. The device which can remove particulate matter present in the exhaust from a thermal power plant is :
1) Electrostatic Precipitator
2) Catalytic Convertor
3) STP 4) Incinerator
18. Given below are two statements : one is labelled as
Assertion (A) and the other is labelled as Reason (R).
Assertion (A) :
Polymerase chain reaction is used in DNA amplification.
Reason (R) :
The ampicillin resistant gene is used as a selectable marker to check transformation
In the light of the above statements, choose the correct answer from the options given below :
1) (A) is correct but (R) is not correct
2) (A) is not correct but (R) is correct
3) Both (A) and (R) are correct and (R) is the correct explanation of (A)
4) Both (A) and (R) are correct but (R) is not the correct explanation of (A)
19. Which one of the following plants does not show plasticity?
1) Buttercup 2) Maize
3) Cotton 4) Coriander
20. The process of translation of mRNA to proteins begins as soon as :
1) Both the subunits join together to bind with mRNA
2) The tRNA is activated and the larger subunit of ribosome encounters mRNA
3) The small subunit of ribosome encounters mRNA
4) The larger subunit of ribosome encounters mRNA
21. Read the following statements and choose the set of correct statements :
a) Euchromatin is loosely packed chromatin
b) Heterochromatin is transcrip- tionally active
c) Histone octomer is wrapped by negatively charged DNA in nucleosome
d) Histones are rich in lysine and arginine
e) A typical nucleosome contains 400 bp of DNA helix
Choose the correct answer from the options given below :
1) (b), (e) Only
2) (a), (c), (e) Only
3) (b), (d), (e) Only
4) (a), (c), (d) Only
22. Read the following statements about the vascular bundles :
a) In roots, xylem and phloem in a vascular bundle are arranged in an alternate manner along the different radii.
b) Conjoint closed vascular bundles do not possess cambium
c) In open vascular bundles, cam- bium is present in between xylem and phloem
d) The vascular bundles of dicotyledonous stem possess endarch protoxylem
e) In monocotyledonous root, usually there are more than six xylem bundles present
Choose the correct answer form the options given below :
1) (a), (b), (c) and (d) Only
2) (a), (c), (d) and (e) Only
3) (a), (b) and (d) Only
4) (b), (c), (d) and (e) Only
23. Exoskeleton of arthropods is composed of :
1) Chitin 2) Glucosamine
3) Cutin 4) Cellulose
24. What is the net gain of ATP when each molecule of glucose is converted to two molecules of pyruvic acid?
1) 2 2) 8 3) 4 4) 6
ANSWER KEY
1) 1 2) 3 3) 4 4) 1 5) 1 6) 4 7) 2 8) 3 9) 3 10) 4 11)1 12) 1 13) 1 14) 4 15) 4 16) 4 17) 1 18) 4 19) 2 20) 3
21)4 22) – 23) 1 24) 1
Sabbidi Ramesh
Lecturer in Botany & Neet faculty,
Govt Junior College,
Banswada-
8179227595.
