| 1 |
What is the primary function of the xylem tissue in a leaf. |
To transport sugars to othe rparts
To control the opening and closing of stomata
To transport water to parts of leaf
To synthesize chlorophyII
|
| 2 |
In a leaf, which tissue is primarily responsible for photosynthesis. |
Phloem
Xylem
Mesophyll
Epidermis
|
| 3 |
In the wall of stomach, which tissue also contains blood vessels and nerves. |
Phloem
Inner Connective
Epithelial
Muscle
|
| 4 |
The epithelial tissue in the stomach wall is responsbible for producing |
Mucus
Pepsinogen
Hydrochloric acid
All of these
|
| 5 |
At which level of organization gas exchagne occurs between body and environment. |
Oganelle level in mitochndria
Organ system level in the respiratory system
Cellular level in alveolar cells
Tissue level in epithelial tissues
|
| 6 |
A higher level of organization exhibits emergent properties when |
Its Parts function independently
Its parts inteact to perform more function
The individual parts are more important than the whole
The sum of its parts is greater than the whole
|
| 7 |
All of the following event takes place both in mitosis and meiosis except. |
Condensation of chromatin to form chromosomes
Formationof spinde apparatus
Nuclear envelop and nucleolus disappear
Chromosomes pair for crossing over
|
| 8 |
Chromosomal number of fruit fly is 8 The gametes of fruit fly contain. |
2 Chromosomes
4 Chromosomes
8 Chromosomes
16 Chromosomes
|
| 9 |
What causes the number of chromosomes to reduce to half when a cell divides by meiosis. |
Seperation of homologous chromosomes during meiosis I
Replication of DNA during interphase I
Seperation of sister chromatids of all the chromosomes durng meiosis I
Crossing over during meiosis I
|
| 10 |
The longest phase of meiosis is. |
Prophase I
Prophae II
Interphase I
Interphase II
|
| 11 |
Crossing over resuts in genetic recombination . It occurs between |
Two chromatids of homologous chromosomes
Two chromatids of opposite gametes
Two chromatids of any two non homologous chromosomes
Two chromatids of the same chromosome
|
| 12 |
The spindle apparatus of plants differs from that of animals innot having. |
Microtubules
Centromere
Centrioles
Equator of spindle
|
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