Biology-Objective Related Question Answers
876. Movement of cell against concentration gradient is called?
active transport
877. Photosynthesis generally takes place in which parts of the plant?
Leaf and other chloroplast bearing parts
878. Most fish do not sink in water because of the presence of: swim bladder; air bladder; air sacs; air in spongy bones?
I and II are correct
879. Plants synthesis protein from?
amino acids
880. Plants absorb dissolved nitrates from soil and convert them into?
free nitrogen
881. Out of 900 reported species of living gymnosperms; conifers are represented by about 500 species; About 2;50;000 species of angiosperms (flowering plants) have also been reported in the world. The vast and dominant woodlands in Europe; Asia; North America and mountains such as Himalayas are wooded with?
only conifers
882. Plants absorb most part of water needed by them through their?
root hairs
883. Photo-oxidation is?
All of the above
884. Process of cell division can take place by?
mitosis
885. Most highly intelligent mammals are?
dolphins
886. Plant development is influenced by?
quality; quantity and duration of light
887. Prokaryotic cells lack?
All of these
888. Photosynthesis takes place faster in?
white light
889. Nucleus; the genetic material containing rounded body in each cell; was first discovered in 1831 by?
Robert Brown
890. Primary phloem develops from?
provascular tissue
891. Other than spreading malaria; anopheles mosquitoes are also vectors of?
filariasis
892. Pyorrhoea is a disease of the?
gums
893. O2 released in the process of photosynthesis comes from?
water
894. Placenta is the structure formed?
by the union of foetal and uterine tissue
895. Plants hormone that induces cell division is?
kinins
896. Neurospora is used as genetic material because?
it has short life cycle of 10 days
897. Phloem is a tissue found in?
plants
898. N2 content is kept constant in the biosphere due to?
nitrogen cycle
899. out of proteins; lipids and carbohydrates present in a cell membrane; what is true?
Carbohydrates are minimum
900. Potato is a modified form (outgrowth) of?
stem
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