Gopal Jadhav

 write a short note on ornithophily.  1) The transfer of pollen grains through birds is called ornithophily . 2) Bird pollinated plants are called ornithophilous plants. 3)Ornithophilous plants bear large and shoey flowers. 4)Flowers brightly coloured to attract birds for pollination. 5) Ornithophilous flowers lack fragrance as birds have poor sense of smell. 6) pollen grains are sticky and spiny e.. Callistemon, Bignonia, Bombax, Butea,etc.

 Give an example of chromosomal disorder caused due to non- disjunction of autosomes. Down's syndrome is an example of chromosomal disorder caused due to non-disjunction of autosomes.

  Name any two steps in the process of succession. 1) Nudation  2) Invasion 3) Ecesis 4) Aggregation 5) Competition and co-action  6) Reaction and stabilization 

 What is the microbial source of enzyme invertase? The microbial source of enzyme invertase is saccharomyces cerevisiae

 Why are root hairs called ephemeral?   Root hairs are delicate and very short lived, hence they are called ephemeral.

 Name the enzyme produced by Streptococcus bacterium. Explain its importance in medical sciences.    The enzyme produced by Streptococcus spp. is streptokinase. it is used as a clot budter for clearing blood clots in the blood vessels in heart patients.

 Define sere.   The entire sequence of communities that successively change in a given area is called is sere.

  In which plants are natural cytokinin reported?    Natural cytokinin are reported in banana flowers, apple, tomato and coconut milk. 

 what are four different regions shown by a typical root?    Zone of absorption, meristematic zone, zone of elongation and zone of maturation are the four different regions shown by a typical root. 

1) Intine consists of cellulose and pectin 2) Which is the most well-known pattern of biodiversity latitudinal  gradient 3) The gradual and fairly predictable change in the species composition of a given area is called ecological succession 4) Which of the following factors will favour species diversity invasive species  5) After ovulation , Graafian follicle changes into corpus luteum  6) The species that initially invades a barren area is called pioneer species  7) Identify free living bacterial biofertilizer  Azotobacter  8) Alcoholic fermentation is brought about by Saccharomyces 9) Chemically kinins are 6-furfurly amino purine . 10) The microenvironment  surrounding the roots is called rhizosphere.

पर्यावरण म्हणजे काय      पर्यावरणाची संकल्पना अत्यंत व्यापक अशी आहे. पृथ्वीवर मानव ज्याठिकाणी वास्तव्य करतो त्याच्या सभोवतालच्या प्रत्येक गोष्टीचा समावेश पर्यावरणात होत असतो. मनुष्याच्या सभोवताली  अनेक घटक असतात.      त्यात काही घटक सजीव तर काही घटक निर्जीव असतात. काही भौतिक घटक असतात. तर काही रासायनिक घटक असतात. मानवाच्या सभोवताली असणाऱ्या या सर्व घटकांना पर्यावरण असे म्हणता येईल.    इंग्रजी भाषेत मध्ये पर्यावरणाला Environment  असा शब्द आहे.  त्यातील Environ या शब्दाचा अर्थ to surround असा होतो. to surround म्हणजे सभोवतालची परिस्थिती होय. यावरून मानवाच्या सभोवतालच्या परिस्थितीला पर्यवरण असे म्हणता येईल. व्याख्या  1) *एखाद्या सजीवास परिवेष्टित करणारे सजीव - निर्जीव , रासायनिक आणि भौतिक घटक म्हणजे त्या                          सजीवाचे पर्यावरण होय.  २)* पृथ्वीवरील विविध परिसंस्था आणि प्रणाली परस्परसंबंध म्हणजे पर्यावरण होय.