Agriculture - Online Test
Q1. Lacunate collenchyma occurs in stem of
Answer : Option D
Explaination / Solution:
Lucinate collenchyma is very much alike to angular collenchyma but the cells are regularly arranged. Thickening occurs at theinner and outer tangential wall. It is found in cucurbita stem.
Q2. Plant growth regulator that is used in delay in leaf senescence is
Answer : Option B
Explaination / Solution:
Cytokinins help overcome the apical dominance. They promote nutrient mobilisation which helps in the delay of leaf senescence.
Q3. In grafting, scion forms
Answer : Option D
Explaination / Solution:
In grafting, scion forms the upper shoot system and stock forms the lower root system. Grafting is an artificial mode of vegetative propagation in which two plants are cut and same height and joined together.
Q4. During symplastic movements, the water travels through
Answer : Option B
Explaination / Solution:
During symplastic movement, the watertravels through the cells – their cytoplasm; intercellular movement isthrough the plasmodesmata. Water has to enter the cells through the cell membrane; hence the movement is relatively slower.
Q5. Statement I: Embryos of monocotyledons possesses only one cotyledon.
Statement II: In grass family cotyledon is called as scutellum.
Statement III: In monocotyledonous embryo radicle and root cap is covered by coleoptile.
Statement II: In grass family cotyledon is called as scutellum.
Statement III: In monocotyledonous embryo radicle and root cap is covered by coleoptile.
Answer : Option A
Explaination / Solution:
monocotyledonous embryo contain only one cotyledon. In grass family, cotyledon is called as scutellum. In monocotyledonous embryo radicle and root cap is covered by coleorhiza.
Q6. Sulphur is important nutrient for optimum growth and productivity of
Answer : Option A
Explaination / Solution:
Sulphur is an important nutrient for optimum growth and productivity of pulse crops, because sulphur is important in protein synthesis of plants.
Q7. The cone of Gymnosperms represent the
Answer : Option C
Explaination / Solution:
In gymnosperms, male and female cones are formed that produce male and female gametes.The strobili bearing microsporophylls and microsporangia are called microsporangiate or male strobili. The cones bearing megasporophylls with ovules or megasporangia are called macrosporangiate or female strobili. So, cone of gymnosperms represents the reproductive organs.
Q8. Light reaction otherwise called as
Answer : Option D
Explaination / Solution:
Light reactions or the ‘Photochemical’ phase include light absorption, water splitting, oxygen release, and the formation of high-energy chemical intermediates, ATP and NADPH. Several complexes are involved in the process.
Q9. In human males, some recessive genes express their effect because
Answer : Option D
Explaination / Solution:
Recessive genes are expressed only in case of homozygous condition but sex chromosomes of males do not have opposite alleles on Y-chromosome. So, the recessive gene located on X-chromosome get expressed in males.
Q10. Energy releasing enzymatically controlled catabolic process which involves step-wise oxidative breakdown of organic substance inside living cells is called
Answer : Option B
Explaination / Solution:
Cellular respiration is a set of metabolic reactions and processes that take place in the cells of organisms to convert biochemical energy from nutrients into adenosine triphosphate (ATP), and then release waste products.
