BOTANY PG TRB PREPARATION ONLINE TEST - 6

Botany PGTRB Online Test

1. The condition of xylem in the leaf of cycas is
A) Exarch
B) Endarch
C) Mesarach
D) Tetrarch
2. Syngenesious stamens (stamens with anthers fused)are found in
A) Annonaceae
B) Cruciferae
C) Sapotaceae
D) Cucurbitaceae
3. Cyathium inflorescence is the characteristic feature of
A) Euphobiaceae
B) Sapotaceae
C) Poaceae
D) Orchidaceae
4. Which of the following chemical is used for the preparation of herbarium plant
A) Potassium chloride
B) Sodium chloride
C) Mercuric chloride
D) Ferric chloride
5. Abnormal secondary growth is found in
A) Dracaena
B) Triticum
C) Helianthus
D) Cucurbita
6. Periblem gives rise to
A) Pericycle
B) Cortex
C) Medulla
D) Epidermis
7. Tunica-corpus theory explains which meristems of stems in angiosperms
A) Apical meristem
B) Intercalary meristem
C) Lateral meristem
D) Ground meristem
8. Wood is mainly composed of
A) Secondary xylem
B) Secondary phloem
C) Spongy parenchyma
D) Sclerenchyma cells
9. Which of the following tests is used to assess the genotype of the F1 individuals
A) Test cross
B) Reciprocal cross
C) Criss-cross
D) Back cross
10. An example of Oxido-reductases is
A) Dehydrogenase
B) Hexokinase
C) Aminotransferase
D) PEP-carboxylase
11. Nitrates are converted into nitrites by
A) Azatobacter
B) Nitrosomonas
C) Rhizobium
D) Nitrobacter
12. The mineral element which is essential in nitrogen fixation is
A) zinc
B) Molybdenum
C) Copper
D) Iron
13. Root pressure in a plant is measured by
A) Photometer
B) Manometer
C) Thermometer
D)Barometer
14. A gaseous plant hormone is
A) Gibberellin
B) Ethylene
C) IAA
D) Cytokinin
15. Which one of the following algae is a stone wort
A) Chara
B) Spirogyra
C) Cladophora
D) Oedogonium
16. Lipids and chrysolaminarin are the storage products in
A) Diatoms
B) Desmids
C) Blue-Green algea
D) Green algea
17. Aecidial stages of Puccinia develop on
A) Wheat leaves
B) Wheat stem
C) Upper surface of Barberry leaf
D) Lower surface of Barberry leaf
18. Fungi imperfect (Deuteromycetes) lack
A) Spores
B) Sexual reproduction
C) Asexual reproduction
D) Hyphae
19. Lichens show symbiotic relationships between
A) Fungus and roots of higher plants
B) Fungus and alga
C) Two alga
D) Two fungi
20. A Helical virus with naked capsid is
A) Tobacco mosaic virus
B) Influenza virus
C) Retro virus
D) Toga virus
Score =
Correct answers: