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Q. Describe Palynological Evidence?
Palynology is the study of pollen and spores. The taxonomic characters of pollen grains include wall structure, polarity, symmetry, shape and grain size. In angiosperms pollen grains are of two kinds viz. Monocolpate and tricolpate. Monocotpate pollen grains are boat shaped, have one long germinal furrow and one germinal aperture. This is characteristic of primitive dicotyledons and majority of monowtyledons. According to some palynologists the first flowering plants had monocolpate pollen grains. Tricolpate grains are globose, symmetrical, have three germinal apertures and are characteristic of advanced dicotyledons.
Annelids - Hormones in Growth and Reproduction Studies on polychaetes have displayed that the endocrine glands play a key role in growth and reproduction. In addition to the b
Occurrence of Biotin Biotin occurs in nature very likely in all living cells, although usually in minute concentrations. In animal organs and in yeast, biotin is mainly cont
Q. What is Fenugreek seeds? Fenugreek seeds: 'Commonly known as methi seeds in Hindi. They are commonly used in Indian cuisine in chutney and even in pickles and several dishes
GROWTH RATE IN ANIMALS - Growth rate is different at different periods of life. Growth period in human may be studied in 5 steps - (i) Prenatal - In gestation period fo
Into which subphyla are the protochordates divided? What are some representatives of each protochordate subphylum? Urochordates (or tunicates) and cephalochordates are the two
Explain Technical factors influencing food production? Improvement in technology has a significant impact on productivity. Improvements may occur in seed production, fertilizer
Q. Fluid management in Diarrhoea? Fluid management: The key to diarrhoea management is the early replacement of fluid lost in the stools through intravenous or oral route. Whil
Q. Where can RNA are found within cells? In the eukaryote cell nucleus the RNA can be found to dispersed in the nuclear fluid, along with the DNA, and as the main constituent o
what are some of the human needs??
SPINAL NERVES 31 Pairs. Mixed type. Total weight 150 gms. At the base of origin of spinal nerves gland of swammardon or calcarious ganglion is present. Composed of m
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