Agriculture - Online Test
Q1. The system of adjacent cell walls that is continuous throughout the plant is called as
Answer : Option C
Explaination / Solution:
The apoplastis the system of adjacent cell walls that iscontinuousthroughout the plant, except at the casparianstrips of the endodermis in the roots. The apoplastic movement of water occurs exclusively through the intercellular spaces and the walls of the cells.
Q2. The correct order of stages of embryogeny in dicotyledonous embryo is
Answer : Option C
Explaination / Solution:
Embryogeny in dicotyledonous plants involves mitotic division of zygote to form proembryo, further division in proembryo results into globular embryo followed by heart-shaped embryo to mature embryo.
Q3. Which one is not a element deficiency symptoms
Answer : Option D
Explaination / Solution:
Deficiency of elements in plants manifest as symptoms like chlorosis, necrosis, scorched leaf tips etc. smaller fruit size is not a deficiency symptoms.
Q4. The structure formed by germinated fern spore is
Answer : Option A
Explaination / Solution:
Fern spores germinate to give rise to inconspicuous, small but multicellular, free-living, mostly photosynthetic thalloid gametophytes called prothallus.The gametophytes bear male and female sex organs called antheridia and archegonia.
Q5. On excitation, the electrons picked up by an electron acceptor is passed to
Answer : Option B
Explaination / Solution:
Electrons become excited and jump into an orbit farther from the atomic nucleus. These electrons are picked up by an electron acceptor which passes them to an electrons transport of cytochrome.
Q6. In somatic cells of human beings chromosomes exists as
Answer : Option A
Explaination / Solution:
Somatic cells of human beings contain 23 pairs of chromosomes, 23 each from male and female gametes. These chromosomes always occurs as homologous chromosome as contain same kinds of trait.
Q7. Lactic acid is formed by the process of
Answer : Option C
Explaination / Solution:
Lactic acid is formed by the process of incomplete oxidation of glucose in presence of insufficient oxygen. Lactic acid is formed in muscle cells due to incomplete oxidation to cause cramps.
Q8. Individual component of perianth are called
Answer : Option B
Explaination / Solution:
The flowers in which sepals andpetals are not differentiated are called perianth. The individual component of perianth are called Tepals.
Q9. Condensed part of stem which is specialised to take part in sexual reproduction of angiosperm is called
Answer : Option B
Explaination / Solution:
The condensed part of stem which is specializedto take part in sexual reproduction of angiosperms is called flower. Flower produce seeds and fruits for propagation of species.
Q10. Ground tissue consists of
Answer : Option D
Explaination / Solution:
The ground tissue of plants includes all tissues that are neither dermal nor vascular. It can be divided into three classes based on the nature of the cell walls.
