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Monday, November 11, 2019

Free 2019/2020 Nabteb Gce Biology Practical Questions and Answers Expo

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2019 NABTEB BIOLOGY SOLUTION POWERED BY GurusVoice Team
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(1a)
* ear osicles 
*eustachian tube 
(1b)
*it transports oxygen 
*it regulates temperature 
*it transport  excretory  products 
*it defend the body against  infection 
*it transport  digested food 
*it transport  hormones 
Pick any two 

(1c) 
* xllen 
* phoem

(1d)
To distrupt the cell membranes and softens the cuticle and the cell walls to extract  the chlorophyll 
*to broke down the chlorophyii and taking  the green color  out of the leaf 
(1e)
1.water
2.urea
3.carbondioxide
4.sweat
5.bile salts
Pick any two 

(1f) 
I. It is herbaceous plant 
II. It has an underground stem that can live a long time 

(1g)
I. Olfactory  tubes
II. Cerebellum 

(1h)
I. External factors like availability  of nutrients, humidity, light
II. Internal  factors like hormones 

(1i)
I. Terracing 
II. Contour ploughing 
III. Construction  of drainage  
Iv. Strip cropping 
V. Mulching 
Pick any 2


=================
NUMBER 3 LOADING
=================
(4ai)
1.part containing a seed
2.weed
3.remain of style
4.position of reside 
5.attachment to cob
6.scar left by style

(4aii) 
Vi- dry dehiscert fruit 
Vii- dry  indehiscent of fruit 
Vii- dry indehiscent of fruit 
Ix- dry indehiscent of fruit 
X-  dry indehiscent of fruit 

(4bi)
Vi- dispersed by animals 
Vii-dispersed  by wind

(4bii)
Vi- fruit  of seed may have wings 
Vii- the fruits  of seed may have hooks or hairs by means of which they adhere to the hairs of animals 

(4c)
* to prevent  disease  form spreading  among plant  species  
* to prevent  over crop of plants
* to prevent  undesirable  competition for space, light, water, and nutrients 
Pick any two

====================

5ai)
Xi-female inflorescence of maize
Xii-pride of Barbados 

5aii)
1.filament
2.bract
3.anther
4.stigma
5.anther
6.filament
7.stilr
8.petal
9.nectary tube
10.ovary

5bi)
*4(stigma):receives pollen grains  at pollination 
*5(antner):contains the pollen grains
*8(petal):attract insect  which pollinate  flower 
*10(ovary):contains the ovules,develops into fruit 

(5bii)
Xi- insects
Xii- winds

(5c)
Please  tabulate it
Xi
1.absence of nectar
2.flowers are full in colour
3.petals/sepals are small and incinspicuous
Xii)
1.nectar is present
2.flowers are bringht in colour 
3.petals/sepals are large and conspicuous

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